Custom Capabilities

Custom Capabilities 

more than you expect 

Transformers 

Toroids

Globally available, locally present. 

Watertown (USA) 

Headquarters 

Prototyping, R&D Design 

• Sales Offices 

n Production 

▲ Sales Office & 

Production 

www.we-online.com/midcom 

Innovation 

Team 

Design Center 

European 

Design Center 

(estimated 

opening 2012) 

Fengdu (China) 

Production 

Fuling (China) 

Production 

Design Center 

Longgang (China) 

R&D and Asian Support Staff 

Prototyping 

Production

Content 

Speedy Design Service for Customized Power & Telecom Transformers .........2 

More than you expect, More than components .............................................3 

Safety .......................................................................................................4 

Switch Mode Power Supply Topologies Compared ........................................6 

Topology Selection Flowchart ......................................................................9 

LED Lighting and EMI ...............................................................................10 

EAGLE Library ..........................................................................................12 

Our Partners ............................................................................................13 

Transformers 

Table of Contents .....................................................................................15 

Transformers ...........................................................................................16 

Toroids 

Table of Contents .....................................................................................79 

Toroids ....................................................................................................80 

Transformer Indexes 

Search by Application .................99 

Search by Topology ..................100 

Search by Power ......................101 

Search by Safety ......................102 

Search by Height .....................103 

Search by Length .....................104 

Search by Width .......................105 

Toroid Indexes 

Search by Length .....................106 

Search by Width .......................106 

Search by Height .....................106 

Search by Safety ......................106 

www.we-online.com/midcom 1 

1 

2

Speedy Design Service 

for Customized Power & Telecom Transformers 

This is how it works: 

2 

1 

2 

3 

4 

Complete Speedy Design Form 

www.we-online.com/speedy 

Choose your designated service option 

Selected Service Time Price in € Price in US$ 

Ship 

Ship 

Ship 

next 

day* 

in 

3 days* 

in 

7 days* 


300 

200 

100 

Send to Wurth Electronics Midcom 

Email: speedy@we-online.com or 

Contact: your local Wurth Electronics Midcom salesperson 

This is what you receive: 

Specification Sheet, Test Data, Deviation Report 

& 5 Customized Pieces 

World’s fastest sample service 

for customized transformers 

400 

300 

150 

* Shipped with FedEx Priority 

Speedy Design Service 

Order Form 

Please complete and e-mail to speedy@we-online.com or fax to Wurth Electronics Midcom Inc. +1 605-886-4486. 

Only include the specifications you require. 

Company Information 

Company 

Department 

Name 

Street 

City / State 

Postal Code Country 

Application 

Phone Fax 

E-mail 

If product safety is an issue, please contact us immediately for technical consultation. Our products are not designed for aviation, medical, automotive or life supporting devices. 

Such applications require our written approval prior to use. 

IC Manufacturer Target Price 

IC Number/Name Estimated Annual Usage 

Application Start of Production 

Specification Complete only those specifications of interest and number in order of priority. 

General Specifications Value Priority* 

Primary Inductance (µH) 

Current in Primary (A) 

Turns Ratio 

Leakage Inductance (µH) 

Telecom Parts Value Priority* 

Frequency Response (dB) 

Return Loss (dB) 

Total Harmonic Distortion (dB) 

Longitudinal Balance (dB) 

Line Impedance (Ω) 

Load Impedance (Ω) 

Temperature Range 

Agency Requirements 

Service Ordered ❏ ship next day 

❏ ship 3 days 

❏ ship 7 days 

Package Style: 

❏ EP5 ❏ EP7 ❏ EP10 ❏ EP13 ❏ EPX7 ❏ EPX9 ❏ ER9.5 ❏ ER11.5 ❏ ER14.5 ❏ EFD15 ❏ EFD20 ❏ EFD25 ❏ EE13 (EF12.6) ❏ EE16 (EF16) ❏ EE20 (EF20) ❏ EE25 (EF25) ❏ ER28 

* Priority: Please prioritize the most important specifications with numbers (e.g. 1, 2, 3) 

Power Parts Value Priority* 

Topology 

Total Output Power (W) 

Input Voltage Range (V) 

Operating Frequency (kHz) 

Max. & Min. Duty Cycle 

VAUX (V) indicate PRI or SEC 

IAUX (A) 

VSEC1 with VDIODE (V) 

ISEC1 (A) 

VSEC2 with VDIODE (V) 

ISEC2 (A) 

Regulatory Agencies: ❏ IEC61558 ❏ IEC60950 ❏ UL1310 ❏ Other 

Insulation Requirements: ❏ Functional ❏ Functional 

❏ Basic ❏ Basic 

❏ Reinforced ❏ Reinforced 

❏ Supplementary ❏ Supplementary 

Dielectric Withstand Voltage Operating Voltage 

www.we-online.com/speedy 

Payment Type ❏ Purchase Order (#__________________________) 

❏ Credit Card (Visa, MasterCard, American Express) 


Note: Wurth Electronics Midcom Inc. will design to meet the specifications as closely as possible 

with emphasis given to those parameters with priority. Samples will ship with necessary 

deviations reported along with the test data. 

What applications are supported? 

• Any applications that fit package styles 

• Switch Mode Power: 

- Flyback 

- Forward 

- Push-Pull 

- Coupled Inductors 

• Telecom Applications: 

- xDSL 

- POTS Splitter Inductors 

INSIGHT DESIGN 999973 • MAY 2011 

INSIGHT DESIGN 9999458 • MAY 2011 • Revision 2

More than you expect, 

More than components 

Trilogy of Magnetics 

The design guide for EMI filter design and SMPS & RF design circuit is completely revised, 

newly structured, and covers a multitude of new components and applications. 

Furthermore, the Trilogy includes over 200 practical examples to the following topics: 

n Filter circuits 

n Audio circuits 

n Video circuits 

n Interfaces 

n RF circuits 

n Motor control units 

n SMPS 

n Line filters 

n Power supplies 

Curious? 

Further information and extracts at 

www.we-online.com/trilogy 

Order Code: 744 006 

The "WE Component Selector" and "LTspice IV" are 

practical oriented tools for all engineers who develop SMPS. 

Free download at www.we-online.com/toolbox 

www.we-online.com/midcom 3

Safety 

Functional, Basic, and Reinforced Insulation 

The affect of insulation requirements is significant enough to change the 

form factor, performance, cost, and of course, reliability of the transformer. 

In general terms, functional insulation is the easiest insulation to 

achieve. It allows for magnet wire to be in contact with other magnet 

wire and has no creepage or clearance requirements. The insulation 

strength is tested by a simple dielectric (hipot) test. 

Both basic and reinforced insulation are common to parts subject to 

offline voltages (85-265V AC ). The primary difference between these two 

types of insulation and functional insulation is that basic and reinforced 

require physical separation between windings, solder joints, and cores. 

These distances are known as creepage and clearance. There are a 

several methods to achieve distance requirements; multi-section bobbins, 

encapsulation, margin tape, and extruded insulated wire are the most 

common. You can imagine certain drawbacks to the special insulation: 

increased size, reduced coupling, lower efficiency, decreased manufacturing 

capacity, and limited pin configuration options. 

The distance requirements and lead isolation are set by specific standards. 

Reinforced insulation is typically twice that of basic insulation. 

In some cases, special materials can be used to reduce the distance 

requirements. In other cases, lead-in routing rules can cause significant 

manual production processes, especially when pin configuration is 

fixed. 

Functional 

Basic/ 

Reinforced 

Size + - 

Pinout flexibility + - 

Efficiency + - 

Coupling + - 

Manufacturing capacity/leadtime + - 

Cost + - 

Safety - + 

Dielectric withstand - + 

4 


Definitions 

Basic 

Insulation 

Double 

Insulation 

Functional 

Insulation 

Reinforced 

Insulation 

Creepage 

Distance 

Clearance 

Distance 

Working 

Voltage 

Insulation applies to hazardous live parts 

to provide basic protection against electric 

shock. 

Insulation comprising both basic insulation 

and supplementary insulation. 

Insulation that is necessary only for the functioning 

of the equipment 

Single insulation system that provides a 

degree of protection against electric shock 

equivalent to double insulation 

Shortest distance through air along the 

surface of an insulation material between 

two conductive parts 

Shortest distance in air between two conductive 

parts 

Highest voltage to which the insulation or the 

component under consideration is, or can be, 

subjected when the equipment is operating 

under conditions of normal use

Standards Applicable to LED Lighting 

n UL8750 

• LED Components - Specifies the safety 

requirements for LED light sources and the 

components 

i. Spacing requirement of 0.8mm 

ii. Dielectric requirements 

n IEC60950-1 

1. 1000V AC plus twice the AC (RMS) 

voltage between: 

a. The primary circuit and 

accessible dead parts; 

and 

b. The primary and secondary 

circuit or circuits 

2. 500V between a secondary circuit 

operating at 70V peak or less and 

accessible dead metal parts 

• Information Technology Equipment – Specifies the 

safety requirements for electronic hardware 

i. Spacing requirements of 8mm for reinforced 

400V 

ii. Dielectric requirement: 1500- 4500V AC 

n UL1310 

• Class 2 Power Units - Specifies the safety 

requirements for Class 2 power supplies 

i. Spacing requirement same as UL8750 

ii. Dielectric requirements 

n EN61347-2-13 

1. 1000V AC plus twice the maximum 

rated voltage between: 

a. The primary circuit and 

accessible dead metal parts; 

and 

b. The primary and secondary 

circuit or circuits 

2. 1000V AC plus two times the sum 

of secondary voltages between 

secondary windings for units 

described in 28.3 or 30.2.3 

3. 500V AC between a secondary 

circuit and dead metal parts 

• Lamp Control Gear – Specifies safety 

requirement for DC or AC supplied 

electronic control gear for LED modules 

i. Spacing requirements of 

3-6mm 

ii. Dielectric requirement 

1. Basic insulation: 

2U+1000V 

2. Supplementary 

insulation: 

2U+1750V 

3. Reinforced 

insulation: 

4U+2750V 


Switch Mode Power Supply 

Topologies Compared 

The ubiquitous linear power supply of old has been on a steady decline 

for years, ever since the advent of Switch Mode Power Supplies (SMPS). 

The clear advantage to SMPS over linear supplies has been size and efficiency, 

and as the world-wide energy crises looms on the international, 

commercial and political scene, we have seen the trend to SMPS only 

accelerate. As a new technology, the high component count of SMPS 

made the technology more expensive than linear. But with the birth of 

the electronic age, component costs have dropped so low that the high 

raw material content of copper and iron in the linear transformer has 

made the SMPS technology more cost effective. Even with the disadvantages 

of being more complex and requiring more care to control EMI, 

the advantages of switch mode power supplies far outweigh linear power 

supplies in all but a few niche applications. 

6 

Power Supply Linear SMPS 

Size Large and Heavy Small and Light 

Efficiency 30-40% 70-95% 

Complexity Simple Complex 

EMI Low Noise Filtering Required 

Cost High (Due to Material) Low 

Switching power supplies are made up of a number of different stages. 

If the input is an AC input, then the input stage needs to include both the 

input filter and a rectifier to convert to a DC input. DC to DC converters 

do not need the rectifier. The inverter stage turns around and immediately 

converts the now DC input back into an AC input by switching the DC 

input voltage on and off at a much higher frequency than the original AC 

input. The frequency of operation is often chosen to be in the 20kHz to 

150kHz range, which is high enough to be outside the audible range and 

low enough to keep it outside of the FCC requirements for conducted EMI. 

After the inverter stage, the output stage rectifies and filters the output. 

If an isolated design is required, a transformer is placed between the 

rectifier and output stage. This transformer can be much smaller, lighter 

and cheaper than the linear power supply transformer, due to the higher 

switching frequency. 

Between the output stage and the inverter stage is a controller which 

monitors the output and adjusts the switching action to keep the output at 

the desired level. 

Mains 

Input 

Rectier and 

Input Filter 


Inverter 

Switch 

Controller 

Output 

Transformer 

When designing a power supply, typically the design criteria favors a 

switchmode power supply over a linear power supply. When it comes to 

deciding which SMPS topology to use, the decision can often be much 

more difficult. Selecting the wrong topology can result in a design project 

that does not meet your cost targets, efficiency goals or a host of other 

requirements that you might have. Below we discuss some of the more 

common topologies and their features. 

Buck 

Buck converters are one of the simplest, cheapest and most common 

topologies. While this topology is not suited for applications where 

isolation is required, it is ideal as a DC to DC converter used to stepdown 

voltages. Not only can you achieve high efficiency levels, but also 

high power levels using a buck converter, especially with poly-phase 

topologies. The down side to buck converters is that the input current is 

always discontinuous, resulting in higher EMI. However, EMI issues can 

be addressed with filter components such as chip beads, common mode 

chokes and filter chokes. 

The buck topology only requires a single inductor for single-phase applications, 

and catalog inductors for a wide range of applications are 

available. In addition, custom inductors can be developed for those 

special inductance versus current values that are required, as well as for 

applications requiring extra windings for sensing or supplying power to 

the controller. 

Boost 

Output Rectier 

and Filter 

The boost topology, like the buck topology, is non-isolating. Unlike the 

buck topology, the boost steps up the voltage rather than stepping it 

down. Because the boost topology draws current in a continuous, even 

manner when operating in continuous conduction mode, it is an ideal 

choice for Power Factor Correction circuits. Like the buck topology, there 

are many catalog choices for the inductor used in boost circuits, and 

where there is a special need, custom inductors are available as well. 

DC 

Output

Buck-Boost 

The buck-boost topology can either step the voltage up or down. This 

topology is particularly useful in battery powered applications, where the 

input voltage varies over time but has the disadvantage of inverting the 

output voltage. Another disadvantage to the buck-boost topology is that 

the switch does not have a ground, which complicates the drive circuit. 

Using only a single inductor like the buck and the boost topologies, the 

buck-boost inductor and EMI components are readily available. 

SEPIC/Ćuk 

The SEPIC and Ćuk topologies both use capacitors for energy storage 

in addition to two inductors. The two inductors can be either separate 

inductors or a single component in the form of a coupled inductor. Both 

topologies are similar to the buck-boost topology in that they can step-up 

or step-down the input voltage, making them ideal for battery applications. 

The SEPIC has the additional advantage over both the Ćuk and the 

buck-boost in that its output is non-inverting. An advantage to the SEPIC/ 

Ćuk topologies is that the capacitor can offer some limited isolation. 

Catalog coupled inductors are available for the SEPIC and Ćuk topologies, 

and custom inductors are readily available for special needs. 

Flyback 

The flyback topology is essentially the buck-boost topology that is isolated 

by using a transformer as the storage inductor. The transformer not only 

provides isolation, but by varying the turns ratio, the output voltage can 

be adjusted. Since a transformer is used, multiple outputs are possible. 

The flyback is the simplest and most common of the isolated topologies 

for low-power applications. While they are well suited for high-output 

voltages, the peak currents are very high, and the topology does not lend 

itself well to output current above 10A. One advantage of the flyback 

topology over the other isolated topologies is that many of them require a 

separate storage inductor. Since the flyback transformer is in reality the 

storage inductor, no separate inductor is needed. This, coupled with the 

fact that the rest of the circuitry is simple, makes the flyback topology a 

cost effective and popular topology. 

Forward 

The forward converter is really just a transformer isolated buck converter. 

Like the flyback topology, the forward converter is best suited for lower 

power applications. While efficiency is comparable to the flyback, it does 

have the disadvantage of having an extra inductor on the output and is 

not well suited for high voltage outputs. The forward converter does have 

the advantage over the flyback converter when high output currents are 

required. Since the output current is non-pulsating, it is well suited for 

applications where the current is in excess of 15A. 

Push-Pull 

The push-pull topology is essentially a forward converter with two primary 

windings used to create a dual drive winding. This utilizes the core of 

the transformer much more efficiently than the flyback or the forward 

converters. On the other hand, only half the copper is being used at a 

time, thereby increasing the copper losses significantly in a similar sized 

transformer. For similar power levels, the push-pull converter will have 

smaller filters compared to the forward converter. However the advantage 

that push-pull converters have over flyback and forward converters 

is that they can be scaled up to higher powers. Switching control can be 

difficult with push-pull converters, because care has to be taken not to 

turn on both switches at the same time. Doing so will cause the equal 

and opposite flux in the transformer, resulting in a low impedance and a 

very large shoot-through current through the switch, potentially destroying 

it. The other disadvantage to the push-pull topology is that the switch 

stresses are very high (2∙V IN ), which makes the topology undesirable for 

250V AC and PFC applications. 

Half-Bridge 

The half-bridge topology, like push-pull topologies, can be scaled up well 

to higher power levels and is based on the forward converter topology. 

This topology also has the same issue of the shoot-through current, if 

both switches are on at the same time. In order to control this, there 

needs to be a dead-time between the on-time of each switch. This 

limits the duty-cycle to about 45%. Beneficially, the half-bridge topology 

switching stresses are equal to the input voltage and make it much more 

suited to 250V AC and PFC applications. On the flip side, the output currents 

are much higher than the push-pull topology, thereby making it less 

suited for high current outputs. 

Resonant LLC 

The resonant LLC topology is a half-bridge topology that uses a resonant 

technique to reduce the switching losses due to zero voltage switching, 

even in no-load conditions. This topology scales up well to high power 

levels and has very low losses in devices that are on at all times. This 

topology is not as well suited for stand-by mode power supplies, as the 

resonant tank circuit needs to be energized continuously. The resonant 

LLC also has the advantage over both push-pull and half-bridge topologies 

of being suitable for a wide range of input voltages. The down side 

to the resonant LLC topology is its complexity and cost. 


Switch Mode Power Supply 

Topologies Compared (continued) 

PowerSupply 

Isolated Topologies Non-Isolated Topologies 

8 

Topology Schematic 


Power 

(Watts) 

Typical 

Efficiency 

Buck 500 85 1 

Boost 150 70 1 

Buck- 

Boost 

Relative 

Cost 

150 70 1 

SEPIC 150 75 1.2 

Ćuk 150 75 1.2 

Magnetics 

Required 

Single 

Inductor 

Single 

Inductor 

Single 

Inductor 

Coupled or 

Two 

Inductors 

Coupled or 

Two 

Inductors 

DC Transfer Function 

(V OUT /V IN ) 

Maximum 

Practical 

Duty Cycle 

Universal 

Input 

(90-264) V AC 

Multiple 

Outputs 

V OUT V IN 

Range 

D 0.9 No No Yes No 

1 

_____ 

1 – D 

– D 

_____ 

1 – D 

D 

_____ 

1 – D 

– D 

_____ 

1 – D 

2xP xL xFreq 

out Pri 

Flyback 150 75 1.5 Transformer ___________ √ __________ 

Forward 150 75 1.8 

Push- 

Pull 

Half- 

Bridge 

Resonant 

LLC 

500 80 1.8 

500 85 2 

500 90 2 

Transformer 

and 

Inductor 

Transformer 

and 

Inductor 

Transformer 

and 

Inductor 

Transformer 

V in 

2N s 

___ x D 

N p 

N s 

___ x D 

N p 

N s 

___ x D 

N p 

Frequency 

Dependent Based 

on Resonant Tank 

Transfer Function 

0.9 No No No Yes 

0.9 No No Yes Yes 



0.9 Yes Yes Yes Yes 


0.45 No Yes Yes Yes 


0.45 Yes Yes Yes Yes

Topology Selection 

Flowchart 

YES 

NO 

NO 

Complexity 

& Cost a 

Concern? 

YES 

V IN > 

200V DC ? 

NO 

I OUT > 10A? 

YES 

Half-Bridge Push-Pull 

NO 

YES 

Power < 

70W? 

Resonant 

LLC 

YES 

YES 

Topology 

Selection 

Flowchart 

Isolation 

Required? 

YES 

I OUT > 10A? 

NO 

I OUT < 5A? 

NO 

V OUT > 

30V DC ? 

NO 

YES 

Flyback Forward 

NO 

V OUT < V IN 

Range? 

NO 

V OUT > V IN 

Range or 

PFC? 

NO 

Non-Inverting 

Output 

Desired? 

NO 

Buck-Boost 

or Ćuk 

YES 

Buck 

YES 

Boost 

YES 

Flyback 

or SEPIC 


LED Lighting and EMI 

The lighting industry has experienced a rapid shift toward more energy- 

efficient products due to the marketing of “Green Products”, which focus 

on lowering the carbon footprint. The use of Light Emitting Diodes (LEDs) 

for replacement of standard incandescent light bulbs is more popular in 

residential and consumer lighting products. This transition is due to the 

success of LED lighting for traffic lighting, automotive lighting, and lower 

wattage industrial lighting. 

Any new innovation experiences obstacles. In LED lighting, one problem 

is the issue of Electromagnetic Interference (EMI), or unwanted noise 

signals. There are regulations and standards that govern the EMI levels 

for equipment classifications. Lighting products fall into a specific set of 

these classifications. This means that any lighting products using LEDs as 

replacement products for the standard incandescent light bulbs will need 

to meet EMI regulations. 

LED lighting must be more aggressive to meet EMI, because driver 

circuits for the LED products operate at higher frequencies than the older 

incandescent bulbs (which operate directly off of the 50/60Hz line voltage). 

These higher switching frequencies are the culprit creating the EMI 

problems. For residential lighting, the unwanted interference occurs as 

either conducted or radiated signals. The conducted emission frequency 

ranges from 150kHz up to 30MHz, and the radiated range is for frequencies 

of greater than 30MHz. (See Figure 1). Even when the circuit designs 

are constructed and formatted to reduce EMI problems, there can be 

frequencies in those ranges that will not meet the minimum FCC regulatory 

standard level. When this occurs, there are different filtering devices 

or networks used to meet the EMI regulations. 

Figure 1 

10 

MIL-STD - Conducted 

VDE - Conducted 

If there are issues with radiated noise interference, the solutions shield 

certain components, or the entire circuit. Shielding the device blocks the 

unwanted signals, which are usually over 30MHz. The shielding is usually 

performed from copper shields to divert, or ferrite shields to absorb, the 

unwanted signals. 


FCC - Conducted 

VDE - Radiated 

FCC - Radiated 

MIL-STD - Radiated 

10 100 1 10 100 1 10 100 1 10 100 

Hz kHz MHz GHz 

Frequency 

The other failure is conducted noise interference. When conducted 

emission failures are detected, the problem is from differential mode 

(symmetrical) interference or common mode (asymmetrical) interference. 

As seen in Figure 2, differential interference occurs due to an unbalance 

of the current flow between the line (L1) and neutral (N) nodes. Differential 

noise appears from the out-phase voltages at these nodes from any 

unbalance of the signals. The voltage creates a current in these cables. 

This out of phase current is the differential current. When the signals are 

not equal and opposite, differential interference occurs. 

The usual solution for correcting differential mode interference is to add 

an inductive component on each of the wires, one on the neutral and an 

equal value on the line. This employed solution will create impedances 

that will lower the unwanted signal. The differential mode current flowing 

in opposite directions through the added inductors will induce magnetic 

fields in opposite directions. This generates impedances, which will help 

to suppress the unwanted signal noise and better meet the regulatory 

maximum values. 

The other conducted interference type is common mode interference. 

This type of interference occurs from in-phase current flow between line 

(L1) and neutral (N) with respect to earth ground. All common mode interference 

develops when each current in the cable flows to earth ground 

via parasitic capacitance. The solution to lower this unwanted interference 

is to use a common mode inductor. This is a component that has two 

windings on a common core. By connecting the component properly in the 

circuit, the common mode current will flow in the same direction through 

each inductor winding; thereby, creating equal and in-phase magnetic 

fields. This results in the part having high impedance to the common 

mode signal. 

Common Mode and Differential Mode Interference 

Figure 2 

! 

Solutions using both common mode inductors with differential mode 

inductors are often used for reduction of the unwanted noise, while not 

losing much operating efficiency. Nevertheless, more circuit board space 

is needed, and cost increases in added components, but these methods 

need to be used to meet the FCC regulation levels. 

!

Picture 1 (Dual Coil series by Wurth Electronics Midcom Inc.) 

Recognizing the need for a solution to this problem, Wurth Electronics 

Midcom set out to develop a low-cost, single component that would 

combine both a common mode and differential mode choke into one 

device. Utilizing the nature of stray magnetic fields in a coupled winding 

to our advantage, we were able to create a common mode choke which 

exhibited extremely high differential mode inductance as well. Further 

development of the part for the lighting industry lead to a low-cost part 

with superb performance and handily solves this problem. 

Wurth Electronics Midcom has recently released the Dual Coil chokes, 

which have unsurpassed common mode and differential mode impedance 

for this small of a product. The electrical characteristics can be seen in 

Plot 1 for these new components, the Dual Coil series. 

From the illustration in Plot 1, the differential mode impedance 

(DMZ) is seen to track very closely to the common mode 

impedance (CMZ). This will help to suppress the 

unwanted noise signals from each conducted mode, 

without need for additional magnetic components. The 

differential noise that occurs even at low frequencies in the 

kilohertz range can be lowered due to the high impedance values 

of the Dual Coil common mode inductor. 

Impedance [Ohm] 

1000000 

100000 

10000 

1000 

100 

10 

1 

Plot 1 

Impedance 

0.1 MHz 1 MHz 10 MHz 

Frequency 

100 MHz 1000 MHz 

The understanding of both common mode interference and differential 

mode interference is important in order to correct EMI issues in an efficient 

and cost effective solution. As switching frequencies increase in 

order to increase operational efficiency and decrease driver sizes, the 

issues for interference also move into higher frequency bands. 

The lighting industry will continue to look for energy efficiency to replace 

the mature, but inefficient incandescent light bulbs. Over time, the more 

efficient, compact, fluorescent lamps and LED lighting circuits will continue 

to replace the standard incandescent bulbs. As this moves forward, 

the issues of EMI will be a concern, and solutions will need to be used to 

meet FCC and VDE regulations. n 

CMZ 

DMZ 


EAGLE Library 

Wurth Electronics Midcom releases new EAGLE library V1.0 for 2012. 

Now EAGLE users can concentrate on easier and earlier board design by 

using our component library, which offers pre-drawn pad layouts and 

pinouts for preferred, standard, and non-standard package styles. 

Library includes: 

n Preferred, standard, and non-standard package styles 

n Links to datasheets in the device descriptions 

n NEW! T8 package styles 

n NEW! Planar package styles 

n NEW! SMD offline package styles 

Component schematics show windings with specific and recommended 

pinouts available. 

Accurate pad layouts with redundant pin labeling for easier placement. 

The EAGLE library is available through the CadSoft 

EAGLE site or www.we-online.com/toolbox 

12 

www.we-online.com/midcom

Our Partners 

CUSTOMER 


14 

www.we-online.com/midcom

Transformers 

Contents 

Package Size 

Bobbin 

DC-DC 

Flyback 

Power Level 

(W) at 100kHz 

Mount 

Pins 

EE13/6/6 070-5449 14 TH-H 8 Reinforced 15.00 15.80 18.50 16 

EE13/6/6 070-2860 18 TH-V 10 Functional 14.70 14.70 15.20 17 

EE13/7/4 (EF12.6) 070-4849 10 TH-H 8 Functional 14.70 16.80 12.70 18 

EE13/7/4 (EF12.6) 070-5662 10 TH-H 9 Reinforced 13.70 19.70 10.20 19 

EE13/7/4 (EF12.6) 070-4820 10 SMD 10 Functional 13.70 17.70 10.50 20 

EE16/7/5 070-5472 19 TH-H 10 Reinforced 16.90 18.80 13.30 21 

EE16/7/5 070-5278 22 TH-V 10 Reinforced 18.00 16.50 18.00 22 

EE16/8/5 (EF16) 070-5420 24 TH-H 8 Functional 18.00 20.30 14.30 23 

EE16/8/5 (EF16) 070-5280 22 TH-H 9 Reinforced 20.30 24.40 16.00 24 

EE16/8/5 (EF16) 070-5642 25 SMD 12 Reinforced 17.80 26.10 13.80 25 

EE20/10/6 (EF20) 070-4989 49 TH-H 10 Functional 23.00 22.00 17.50 26 

EE20/10/6 (EF20) 070-5248 46 TH-V 10 Functional 22.30 14.40 23.00 27 


EE25/13/11 070-5080 124 TH-V 8 Functional 26.00 23.50 29.50 29 

EE25/13/7 (EF25) 070-2607 95 TH-H 10 Functional/Reinforced 27.90 29.20 21.60 30 

EE25/13/7 (EF25) 070-4846 99 TH-V 10 Functional/Reinforced 26.80 20.30 28.60 31 


EFD15 070-2745 14 TH-H 8 Functional 16.80 16.80 8.90 33 

EFD15 070-2644 14 SMD 10 Functional 15.80 22.20 8.90 34 








EP5 070-4426 1 SMD 6 Functional 6.60 8.30 5.60 42 


EP7 070-2150 3 TH-H 6 Functional 10.20 8.30 9.80 44 

EP7 070-4436 3 SMD 8 Supplementary 9.80 9.10 10.50 45 







EP13 070-4370 14 TH-H 10 Supplementary 14.00 14.00 12.70 52 



EPX7 070-4434 4 SMD 8 Functional 10.20 9.10 12.30 55 

EPX9 070-5103 6 SMD 8 Functional 10.20 10.20 12.70 56 

EPT18 070-5743 38 SMD 8 Reinforced 19.00 41.70 11.30 57 

EPT20 070-5669 59 TH-H 10 Reinforced 22.50 47.00 12.00 58 

ER9.5 070-2008 2 SMD 8 Functional 10.00 12.10 6.00 59 



ER28/14 070-5576 138 TH-V 10 Functional/Reinforced 29.50 23.50 31.00 62 

ER28/14 070-4869 133 TH-H 12 Functional/Reinforced 31.00 31.00 25.00 63 

ER28/17 070-5565 184 TH-V 10 Functional/Reinforced 29.00 24.00 36.00 64 

ER28/17 070-5610 180 TH-H 12 Functional/Reinforced 32.00 39.00 26.00 65 

ERL35 070-5783 336 TH-H 14 Functional/Reinforced 36.50 44.00 28.50 66 

ETD34 070-5455 255 TH-H 14 Functional/Reinforced 39.60 43.20 30.50 67 

PQ2016 070-5674 35 TH-V 14 Functional 23.40 23.40 18.70 68 





RM4 070-5754 6 TH-V 6 Functional 11.40 11.40 11.20 73 



RM6 070-5657 19 SMD V 8 Functional 20.10 21.80 13.50 76 



= Speedy Design Package 

Safety 

Length (mm) 

Width (mm) 

Height (mm) 

Page Number 


1

EE13/6/6 

8-Pin, THT, Horizontal 

16 

AVAILABLE 

Design Data 

Package Size 

Dimensions & Footprint 

Power Level 

Core Area (Ae) 

(mm 2 ) 


Path Length 

(mm) 

Characteristics 

n Bobbin 070-5449 

n Through-Hole 

n Core Direction: Horizontal 

n Reinforced Insulation 

n Extended Rail 

Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE13/6/6 20.20 27.70 559.54 15.00 15.75 18.50 

Applications 

n Offline 

n Lighting 

n Metering 

n DC/DC Converter 

n Industrial Controls 

Recommended Pinout 

Bobbin Winding Area 

n White Goods 

n Telecom 

n Charging 

n Stand-by Power

EE13/6/6 

10-Pin, THT, Vertical 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-2860 


n Core Direction: Vertical 

n Functional Insulation 

Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE13/6/6 20.20 27.70 559.54 14.73 14.73 15.24 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom 


1

EE13/7/4 (EF12.6) 


18 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4849 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE13/7/4 (EF12.6) 12.40 29.60 367.04 14.70 16.76 12.70 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom

EE13/7/4 (EF12.6) 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5662 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE13/7/4 (EF12.6) 12.40 29.60 367.04 13.72 19.69 10.16 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 

n Stand-by Power 


1

EE13/7/4 (EF12.6) 

10-Terminal, SMD, Horizontal 

Design Data 


Power Level 

20 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4820 

n Surface Mount 

n Pick & Placable 



Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE13/7/4 (EF12.6) 12.40 29.60 367.04 13.72 19.66 10.50 

Applications 

n Lighting 

n Metering 




n White Goods 

n Telecom

EE16/7/5 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5472 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE16/7/5 18.40 35.50 653.20 16.90 18.80 13.31 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 



1

EE16/7/5 


22 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5278 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE16/7/5 18.40 35.50 653.20 18.00 16.50 18.00 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 

n Stand-by Power

EE16/8/5 (EF16) 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5420 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE16/8/5 (EF16) 20.10 37.60 755.76 17.96 20.30 14.30 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom 


1

EE16/8/5 (EF16) 


24 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5280 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE16/8/5 (EF16) 20.10 37.60 755.76 20.32 24.38 16.00 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 

n Stand-by Power

EE16/8/5 (EF16) 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5642 






Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE16/8/5 (EF16) 20.10 37.60 755.76 17.78 26.10 13.80 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 



1

EE20/10/6 (EF20) 


26 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4989 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE20/10 (EF20) 32.00 46.00 1472.00 23.00 22.00 17.53 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom

EE20/10/6 (EF20) 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5248 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE20/10/6 (EF20) 32.00 46.00 1472.00 22.25 14.40 22.99 

Applications 

n Lighting 

n Metering 




n White Goods 

n Telecom 


1

EE20/10/6 (EF20) 


28 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5643 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE20/10/6 (EF20) 32.00 46.00 1472.00 22.20 25.00 16.00 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 

n Stand-by Power

EE25/13/11 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5080 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE25/13/11 78.40 57.80 4531.52 26.00 23.50 29.50 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom 

n PFC 


1

EE25/13/7 (EF25) 


30 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-2607 



n Functional & Reinforced Insulation 

Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE25/13/7 (EF25) 51.40 57.80 2970.92 27.94 29.21 21.59 

Applications 

n Lighting 

n Metering 


n Offline 

n Charging 





n White Goods 

n Telecom

EE25/13/7 (EF25) 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4846 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE25/13/7 (EF25) 51.40 57.80 2970.92 26.80 20.32 28.58 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 



1

EE25/13/7 (EF25) 


32 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5644 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EE25/13/7 (EF25) 51.40 57.80 2970.92 26.40 31.80 22.86 

Applications 

n Offline 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n Charging 

n Stand-by Power

EFD15 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-2745 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD15 15.00 34.00 510.00 16.76 16.76 8.89 

Applications 

n Lighting 

n Metering 

n PoE 




n White Goods 

n Telecom 


1

EFD15 


34 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-2644 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD15 15.00 34.00 510.00 15.75 22.23 8.89 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n Telecom

EFD15 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4265 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD15 15.00 34.00 510.00 17.15 22.23 8.89 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n Telecom 


1

EFD20 


Design Data 


Power Level 

36 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-2609 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD20 31.00 47.00 1457.00 21.08 21.08 10.80 

Applications 

n Lighting 

n Metering 

n PoE 




n White Goods 

n Telecom

EFD20 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4290 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD20 31.00 47.00 1457.00 23.11 25.91 10.92 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n Telecom 


1

EFD20 


38 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4275 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD20 31.00 47.00 1457.00 23.11 29.08 11.43 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n Telecom

EFD25 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-2710 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD25 58.00 57.00 3306.00 26.04 26.67 13.59 

Applications 

n Lighting 

n Metering 

n PoE 




n White Goods 

n Telecom 


1

EFD25 


40 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4476 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD25 58.00 57.00 3306.00 27.03 32.31 13.69 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n Telecom

EFD30 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5490 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EFD30 69.00 68.00 4692.00 33.00 35.56 14.48 

Applications 

n Lighting 

n Metering 

n PoE 




n White Goods 

n Telecom 


1

EP5 


42 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4426 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP5 3.09 9.73 30.07 6.60 8.26 5.59 

Applications 



n White Goods 



n DSL 

n Telecom 

n CMC

EP7 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 071-0353 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP7 10.30 15.70 161.71 10.16 13.36 8.64 

Applications 



n White Goods 


n DSL 

n Telecom 

n CMC 


1

EP7 


Design Data 


Power Level 

44 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-2150 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP7 10.30 15.70 161.71 10.16 8.26 9.78 

Applications 



n White Goods 


n DSL 

n Telecom 

n CMC

EP7 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4436 




n Supplementary Insulation 


Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP7 10.30 15.70 161.71 9.78 9.14 10.54 

Applications 



n White Goods 


n DSL 


n Telecom 

n CMC 


1

EP10 


46 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-2720 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP10 9.39 19.20 180.29 13.34 15.24 11.43 

Applications 

n PoE 





n DSL 

n Telecom 

n CMC

EP10 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4410 






n Built-in Shelves 

Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP10 9.39 19.20 180.29 13.34 15.24 11.56 

Applications 

n PoE 



n White Goods 



n DSL 

n Telecom 

n CMC 


1

EP10 


Design Data 


Power Level 

48 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-2365 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP10 9.39 19.20 180.29 13.34 11.68 12.57 

Applications 

n PoE 



n White Goods 


n DSL 

n Telecom 

n CMC

EP13 


AVAILABLE 

Design Data 

Package Size 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-2381 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP13 19.50 24.20 471.90 13.46 17.75 12.70 


Power Level 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n DSL 

n Telecom 

n CMC 


1

EP13 


Design Data 


Power Level 

50 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4375 







Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP13 19.50 24.20 471.90 13.46 17.75 12.70 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n DSL 

n Telecom 

n CMC

EP13 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4300 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP13 19.50 24.20 471.90 13.97 13.97 12.70 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n DSL 

n Telecom 

n CMC 


1

EP13 


Design Data 


Power Level 

52 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4370 






Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP13 19.50 24.20 471.90 13.97 13.97 12.70 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n DSL 

n Telecom 

n CMC

EP13 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4482 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP13 19.50 24.20 471.90 13.97 17.17 12.70 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n DSL 

n Telecom 

n CMC 


1

EP13 


Design Data 


Power Level 

54 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4483 







Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EP13 19.50 24.20 471.90 13.97 17.17 12.70 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n DSL 

n Telecom 

n CMC

EPX7 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4434 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EPX7 16.50 15.40 254.10 10.16 9.14 12.32 

Applications 

n PoE 



n White Goods 



n DSL 

n Telecom 

n CMC 


1

EPX9 


56 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5103 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EPX9 14.50 18.70 271.15 10.16 10.16 12.70 

Applications 

n Lighting 

n Metering 

n PoE 





n White Goods 

n DSL 

n Telecom 

n CMC

EPT18 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5743 






Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EPT18 41.50 55.50 2303.25 19.00 41.70 11.25 

Applications 

n Offline 

n Lighting 




1

EPT20 


Design Data 


Power Level 

58 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5669 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

EPT20 42.20 73.70 3110.14 22.50 47.00 12.00 

Applications 

n Offline 

n Lighting 


Bobbin Winding Area

ER9.5 

8-Terminal, SMD, Vertical 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-2008 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

ER9.5 8.00 14.20 113.60 10.00 12.07 5.97 

Applications 





n White Goods 

n Telecom 


1

ER11.5 


60 

AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5279 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

ER11.5 11.00 14.70 161.70 12.95 12.70 6.35 

Height 

(mm) 

Applications 

n PoE 





n White Goods 

n Telecom

ER14.5 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4477 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

ER14.5 17.30 19.00 328.70 16.00 16.80 7.62 

Height 

(mm) 

Applications 

n PoE 





n White Goods 

n Telecom 


1

ER28/14 


Design Data 


Power Level 

62 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5576 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

ER28/14 82.10 64.00 5254.40 29.50 23.50 31.00 

Applications 

n Offline 

n Lighting 



n White Goods 


n Telecom 

n PFC 

n Charging 

n Stand-by Power

ER28/14 


AVAILABLE 

Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-4869 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

ER28/14 82.10 64.00 5254.40 31.00 31.00 25.00 

Applications 

n Offline 

n Lighting 



n White Goods 



n Telecom 

n PFC 

n Charging 



1

ER28/17 


Design Data 


Power Level 

64 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5565 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

ER28/17 81.40 75.50 6145.70 29.00 24.00 36.00 

Applications 

n Offline 

n Lighting 



n White Goods 


n Telecom 

n PFC 

n Charging 

n Stand-by Power

ER28/17 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5610 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

ER28/17 81.40 75.50 6145.70 32.00 39.00 26.00 

Applications 

n Offline 

n Lighting 



n White Goods 


n Telecom 

n PFC 

n Charging 



1

ERL35 


Design Data 


Power Level 

66 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5783 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

ERL35 103.00 92.70 9548.10 36.50 44.00 28.50 

Applications 

n Offline 

n Lighting 



n White Goods 


n Telecom 

n PFC 

n Charging 

n Stand-by Power

ETD34 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5455 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

ETD34 97.10 78.60 7632.06 39.60 43.18 30.48 

Applications 

n Offline 

n Lighting 



n White Goods 



n Telecom 

n PFC 

n Charging 



1

PQ2016 


Design Data 


Power Level 

68 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5674 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

PQ2016 62.00 37.40 2318.80 23.37 23.37 18.67 

Applications 

n Lighting 




n White Goods 

n Telecom 

n PFC

PQ2620 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5729 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

PQ2620 119.00 46.30 5509.70 29.20 30.35 25.90 

Applications 

n Lighting 




n White Goods 

n Telecom 

n PFC 


1

PQ2625 


Design Data 


Power Level 

70 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5649 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

PQ2625 118.00 55.50 6549.00 29.20 30.35 29.30 

Applications 

n Lighting 




n White Goods 

n Telecom 

n PFC

PQ3220 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5050 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

PQ3220 169.00 55.90 9447.10 34.00 37.34 24.13 

Applications 

n Lighting 




n White Goods 

n Telecom 

n PFC 


1

PQ3230 


Design Data 


Power Level 

72 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-4796 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

PQ3230 167.00 74.70 12474.90 35.56 37.34 34.29 

Applications 

n Lighting 




n White Goods 

n Telecom 

n PFC

RM4 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5754 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

RM4 10.80 20.60 222.48 11.44 11.44 11.18 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom 

n CMC 

n PFC 


1

RM5 


Design Data 


Power Level 

74 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-2250 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

RM5 21.00 21.40 449.40 13.97 13.97 11.18 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom 

n CMC 

n PFC

RM6 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-5757 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

RM6 31.00 27.00 837.00 17.65 16.64 13.21 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom 

n CMC 

n PFC 


1

RM6 


Design Data 


Power Level 

76 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5657 





Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

RM6 31.00 27.00 837.00 20.07 21.84 13.46 

Applications 

n Lighting 

n Metering 




n White Goods 

n Telecom 

n CMC 

n PFC

RM8 


Design Data 

Package Size 


Power Level 


(mm 2 ) 

Path Length 

(mm) 


n Bobbin 070-2255 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

RM8 52.00 35.10 1825.20 21.59 21.59 17.27 

Applications 

n Lighting 

n Metering 





n White Goods 

n Telecom 

n CMC 

n PFC 


1

RM10 


Design Data 


Power Level 

78 

Package Size 


(mm 2 ) 


Path Length 

(mm) 


n Bobbin 070-5680 




Volume 

(mm 3 ) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

RM10 90.00 44.00 3960.00 26.16 26.16 19.05 

Applications 

n Lighting 



n White Goods 



n Telecom 

n CMC 

n PFC

Toroids 

Contents 

Package Size 

No. Terminals 

Header 

Mount 

TOR-4P-HT2-SFTY 4 250-0511 SMD Supplementary 4.4 9.1 2 80 

TOR-4P-HT2.2-SFTY 4 250-0989 SMD Supplementary 6.1 9 2.2 81 

TOR-4P-HT2.5-SFTY 4 250-0581 SMD Supplementary 4.4 9.1 2.5 82 

TOR-4P-HT3.4-SFTY 4 250-0997 SMD Supplementary 4.8 9.5 3.4 83 

TOR-4P-HT2 4 250-0889 SMD Functional 5.9 8.3 2 84 

TOR-4P-HT2.2 4 250-0841 SMD Functional 5.1 5.6 2.2 85 


TOR-4P-HT3 4 250-0973 SMD Functional 5.9 8.3 3 87 




TOR-4P-HT6.4 4 250-0522 SMD Functional 9 10.1 6.4 91 


TOR-6P-HT3.6 6 250-0593 SMD Functional 6.7 9 3.6 93 

TOR-8P-HT4 8 250-0626 SMD Functional 5.3 8 4 94 

TOR-8P-HT4.4 8 250-0912 SMD Functional 6.1 9.4 5 95 


TOR-8P-HT7.6 8 250-0931 SMD Functional 9 8.6 7.6 97 


Safety 

Length (mm) 

Width (mm) 

Height (mm) 

Page 

Number 


2

TOR-4P-HT2-SFTY 

4-Terminal, SMD 

Design Data 


80 

Package Size 

Rail Length 

(mm) 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0511 



n 3000V Isolation 

Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT2-SFTY 1.65 0.61 7.19 4.37 4.00 1.00 4.40 9.10 2.00 

Height 

(mm) 

Applications 

n Analog Modem 

n Signal Isolation 

n Telecom 

n LAN 

Recommended Pinout

TOR-4P-HT2.2-SFTY 


Design Data 

Package Size 

Rail Length 

(mm) 


Core Area 

(mm 2 ) 

Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0989 




Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT2.2-SFTY 1.65 0.92 9.35 8.63 4.80 1.00 6.10 9.00 2.20 

Height 

(mm) 

Applications 



n Telecom 

n LAN 



2



Design Data 


82 

Package Size 

Rail Length 

(mm) 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0581 



n Up to 6000V Surge Capability 

Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT2.5-SFTY 1.65 0.81 7.59 6.12 4.00 1.00 4.40 9.10 2.50 

Height 

(mm) 

Applications 



n Telecom 

n LAN 

Recommended Pinout



Design Data 

Package Size 

Rail Length 

(mm) 


Core Area 

(mm 2 ) 

Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0997 




Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT3.4-SFTY 1.35 0.81 7.59 6.12 3.80 1.00 4.80 9.50 3.40 

Height 

(mm) 

Applications 



n Telecom 

n LAN 



2

TOR-4P-HT2 


Design Data 


84 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 

Max 

Finished OD 

(mm) 


n Header 250-0889 


Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT2 1.00 9.71 9.66 5.26 1.00 5.90 8.30 2.00 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

TOR-4P-HT2.2 


Design Data 

Package Size 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0841 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT2.2 0.61 7.19 4.37 3.60 1.00 5.10 5.60 2.20 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 



2

TOR-4P-HT2.5 


Design Data 


86 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 


n Header 250-1013 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

TOR-4P-HT2.5 1.24 9.27 11.45 5.00 1.00 6.60 8.90 2.50 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

TOR-4P-HT3 


Design Data 

Package Size 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0973 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT3 2.31 9.71 22.38 5.00 1.00 5.90 8.30 3.00 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 



2

TOR-4P-HT3.3 


Design Data 


88 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 


n Header 250-1009 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

TOR-4P-HT3.3 2.23 13.90 30.97 6.70 1.00 8.30 8.30 3.30 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

TOR-4P-HT4.1 


Design Data 

Package Size 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0621 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT4.1 2.10 8.18 17.15 4.80 1.00 6.30 8.90 4.10 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 



2

TOR-4P-HT4.7 


Design Data 


90 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 


n Header 250-0608 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

TOR-4P-HT4.7 1.90 9.27 17.61 4.80 1.00 7.50 5.40 4.70 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

TOR-4P-HT6.4 


Design Data 

Package Size 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0522 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-4P-HT6.4 4.50 14.14 63.62 6.90 1.00 9.00 10.10 6.40 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 



2

TOR-6P-HT2.5 


Design Data 


92 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 


n Header 250-0528 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

TOR-6P-HT2.5 0.88 10.37 9.12 5.00 1.00 6.60 8.90 2.50 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

TOR-6P-HT3.6 


Design Data 

Package Size 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0593 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-6P-HT3.6 2.16 9.71 20.96 5.00 1.00 6.70 9.00 3.60 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 



2

TOR-8P-HT4 


Design Data 


94 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 


n Header 250-0626 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

TOR-8P-HT4 2.16 9.71 20.96 4.50 1.00 5.30 8.00 4.00 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

TOR-8P-HT4.4 


Design Data 

Package Size 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0912 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-8P-HT4.4 3.20 10.52 33.65 5.00 1.00 6.10 9.40 5.00 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 



2

TOR-8P-HT5.3 


Design Data 


96 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 


n Header 250-0482 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

TOR-8P-HT5.3 2.16 9.71 20.96 4.70 1.00 8.90 8.60 5.30 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

TOR-8P-HT7.6 


Design Data 

Package Size 

Core Area 

(mm 2 ) 


Path 

Length 

(mm) 

Volume 

(mm 3 ) 


n Header 250-0931 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

TOR-8P-HT7.6 4.49 13.90 62.40 6.80 1.00 9.00 8.60 7.60 

Height 

(mm) 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 



2

TOR-16P-HT6.5 


Design Data 


98 

Package Size 

Core Area 

(mm 2 ) 

Path 

Length 

(mm) 


Volume 

(mm 3 ) 


n Header 250-0592 


Max 

Finished OD 

(mm) 

Minimum ID 

(mm) 

Length 

(mm) 

Width 

(mm) 

Height 

(mm) 

TOR-16P-HT6.5 2.16 9.96 21.47 4.60 1.00 11.70 9.40 6.50 

Applications 

n Gate Drive 

n CMC 

n Inductor 


n Telecom 

n LAN 

Recommended Pinout

Transformers 

Search by Applications 

Applications 

Package Size 

Mount 

Safety 

Offline 

Lighting 

Metering 

PoE 

EE13/6/6 TH-H Reinforced x x x x x x x x 16 

EE13/6/6 TH-V Functional x x x x x x 17 

EE13/7/4 (EF12.6) TH-H Reinforced x x x x x x x x 18 

EE13/7/4 (EF12.6) TH-H Functional x x x x x x 19 

EE13/7/4 (EF12.6) SMD Functional x x x x x x 20 

EE16/7/5 TH-H Reinforced x x x x x x x x 21 

EE16/7/5 TH-V Reinforced x x x x x x x x 22 

EE16/8/5 (EF16) TH-H Functional x x x x x x 23 

EE16/8/5 (EF16) TH-H Reinforced x x x x x x x x 24 

EE16/8/5 (EF16) SMD Reinforced x x x x x x x x 25 


EE20/10/6 (EF20) TH-V Functional x x x x x x 27 


EE25/13/11 TH-V Functional x x x x x x x 29 



EE25/13/7 (EF25) TH-V Reinforced x x x x x x x x 31 

EE25/13/7 (EF25) TH-V Functional x x x x x x 31 


EFD15 TH-H Functional x x x x x x x 33 

EFD15 SMD Functional x x x x x x x 34 








EP5 SMD Functional x x x x x 42 

EP7 SMD Functional x x x x x x 43 

EP7 TH-H Functional x x x x x x 44 

EP7 SMD Supplementary x x x x x x 45 


EP10 SMD Supplementary x x x x x x x 47 

EP10 TH-H Functional x x x x x x x 48 

EP13 SMD Functional x x x x x x x x x 49 

EP13 SMD Supplementary x x x x x x x x x 50 

EP13 TH-H Functional x x x x x x x x x 51 

EP13 TH-H Supplementary x x x x x x x x x 52 

EP13 SMD Functional x x x x x x x x x 53 

EP13 SMD Supplementary x x x x x x x x x 54 

EPX7 SMD Functional x x x x x x x 55 

EPX9 SMD Functional x x x x x x x x x 56 

EPT18 SMD Reinforced x x 57 

EPT20 TH-H Reinforced x x 58 

ER9.5 SMD Functional x x x x 59 

ER11.5 SMD Functional x x x x x 60 

ER14.5 SMD Functional x x x x x 61 

ER28/14 TH-H Reinforced x x x x x x x x 63 

ER28/14 TH-H Functional x x x x x x 63 

ER28/17 TH-V Reinforced x x x x x x x x 64 

ER28/17 TH-V Functional x x x x x x 64 

ER28/17 TH-H Reinforced x x x x x x x x 65 

ER28/17 TH-H Functional x x x x x x 65 

ERL35 TH-H Reinforced x x x x x x x x 66 

ERL35 TH-H Functional x x x x x x 66 

ETD34 TH-H Reinforced x x x x x x x x 67 

ETD34 TH-H Functional x x x x x x 67 

PQ2016 TH-V Functional x x x x x x 68 





RM4 TH-V Functional x x x x x x x x 73 



RM6 SMD V Functional x x x x x x x x 76 


RM10 TH-V Functional x x x x x x x 78 


DC/DC 

Converter 

Industrial 

Controls 

White Goods 

DSL 

Telecom 

CMC 

PFC 

Charging 

Stand-by 

Power 

Page 

Number 


Transformers 

Search by Topology 

100 

Topology 

Package Size 

Mount 

EE13/6/6 TH-H Reinforced x x 16 

EE13/6/6 TH-V Functional x x 17 

EE13/7/4 (EF12.6) TH-H Reinforced x x 18 

EE13/7/4 (EF12.6) TH-H Functional x x 19 

EE13/7/4 (EF12.6) SMD Functional x x 20 

EE16/7/5 TH-H Reinforced x x 21 

EE16/7/5 TH-V Reinforced x x 22 

EE16/8/5 (EF16) TH-H Functional x x 23 

EE16/8/5 (EF16) TH-H Reinforced x x 24 

EE16/8/5 (EF16) SMD Reinforced x x 25 

EE20/10/6 (EF20) TH-H Functional x x 26 

EE20/10/6 (EF20) TH-V Functional x x 27 

EE20/10/6 (EF20) TH-H Reinforced x x 28 

EE25/13/11 TH-V Functional x x x x x x x x x 29 

EE25/13/7 (EF25) TH-H Reinforced x x x x x 30 

EE25/13/7 (EF25) TH-H Functional x x x x x 30 

EE25/13/7 (EF25) TH-V Reinforced x x x x x 31 

EE25/13/7 (EF25) TH-V Functional x x x x x 31 

EE25/13/7 (EF25) TH-H Reinforced x x x x x 32 

EFD15 TH-H Functional x x x x x x 33 

EFD15 SMD Functional x x x x x x 34 

EFD15 SMD Functional x x x x x x 35 

EFD20 TH-H Functional x x x x x x x x 36 

EFD20 SMD Functional x x x x x x x x 37 

EFD20 SMD Functional x x x x x x x x 38 

EFD25 TH-H Functional x x x x x x x x x 39 

EFD25 SMD Functional x x x x x x x x x 40 

EFD30 TH-H Functional x x x x x x x x x 41 











EP13 TH-H Supplementary x x x x x x 52 



EPX7 SMD Functional x x x x x x 55 

EPX9 SMD Functional x x x x x x 56 

EPT18 SMD Reinforced x x x x x 57 

EPT20 TH-H Reinforced x x x x x 58 

ER9.5 SMD Functional x x 59 



ER28/14 TH-H Reinforced x x x x x x x x x 63 

ER28/14 TH-H Functional x x x x x x x x x 63 

ER28/17 TH-V Reinforced x x x x x x x x x 64 

ER28/17 TH-V Functional x x x x x x x x x 64 

ER28/17 TH-H Reinforced x x x x x x x x x 65 

ER28/17 TH-H Functional x x x x x x x x x 65 

ERL35 TH-H Reinforced x x x x x x x x x 66 

ERL35 TH-H Functional x x x x x x x x x 66 

ETD34 TH-H Reinforced x x x x x x x x x 67 

ETD34 TH-H Functional x x x x x x x x x 67 

PQ2016 TH-V Functional x x x x x x x x x 68 





RM4 TH-V Functional x x x x x x 73 



RM6 SMD V Functional x x x x x x 76 





Safety 

Flyback 

Push-Pull 

Forward 

Resonant LLC 

Half-Bridge 

Buck 

Boost 

Buck-Boost 

SEPIC/Ćuk 

Page 

Number

Transformers 

Search by Power 

Power 

DC-DC Flyback 

Power Level 

(W) at 100kHz 

Package Size 

Mount 

Pins 

Safety 

1 EP5 SMD 6 Functional 6.6 8.3 5.6 070-4426 42 

2 ER9.5 SMD 8 Functional 10.0 12.1 6.0 070-2008 59 



3 EP7 TH-H 6 Functional 10.2 8.3 9.8 070-2150 44 

3 EP7 SMD 8 Supplementary 9.8 9.1 10.5 070-4436 45 

4 EPX7 SMD 8 Functional 10.2 9.1 12.3 070-4434 55 


6 EPX9 SMD 8 Functional 10.2 10.2 12.7 070-5103 56 

6 RM4 TH-V 6 Functional 11.4 11.4 11.2 070-5754 73 




10 EE13/7/4 (EF12.6) TH-H 8 Functional 14.7 16.8 12.7 070-4849 18 

10 EE13/7/4 (EF12.6) TH-H 9 Reinforced 13.7 19.7 10.2 070-5662 19 

10 EE13/7/4 (EF12.6) SMD 10 Functional 13.7 17.7 10.5 070-4820 20 


12 EFD15 SMD 12 Functional 17.2 22.2 8.9 070-4265 35 

14 EE13/6/6 TH-H 8 Reinforced 15.0 15.8 18.5 070-5449 16 

14 EFD15 TH-H 8 Functional 16.8 16.8 8.9 070-2745 33 





14 EP13 TH-H 10 Supplementary 14.0 14.0 12.7 070-4370 52 



18 EE13/6/6 TH-V 10 Functional 14.7 14.7 15.2 070-2860 17 


19 EE16/7/5 TH-H 10 Reinforced 16.9 18.8 13.3 070-5472 21 

19 RM6 SMD V 8 Functional 20.1 21.8 13.5 070-5657 76 

22 EE16/7/5 TH-V 10 Reinforced 18.0 16.5 18.0 070-5278 22 

22 EE16/8/5 (EF16) TH-H 9 Reinforced 20.3 24.4 16.0 070-5280 24 

24 EE16/8/5 (EF16) TH-H 8 Functional 18.0 20.3 14.3 070-5420 23 

25 EE16/8/5 (EF16) SMD 12 Reinforced 17.8 26.1 13.8 070-5642 25 




35 PQ2016 TH-V 14 Functional 23.4 23.4 18.7 070-5674 68 

38 EPT18 SMD 8 Reinforced 19.0 41.7 11.3 070-5743 57 


46 EE20/10/6 (EF20) TH-V 10 Functional 22.3 14.4 23.0 070-5248 27 


49 EE20/10/6 (EF20) TH-H 10 Functional 23.0 22.0 17.5 070-4989 26 

59 EPT20 TH-H 10 Reinforced 22.5 47.0 12.0 070-5669 58 





95 EE25/13/7 (EF25) TH-H 10 Functional/Reinforced 27.9 29.2 21.6 070-2607 30 


99 EE25/13/7 (EF25) TH-V 10 Functional/Reinforced 26.8 20.3 28.6 070-4846 31 



124 EE25/13/11 TH-V 8 Functional 26.0 23.5 29.5 070-5080 29 

133 ER28/14 TH-H 12 Functional/Reinforced 31.0 31.0 25.0 070-4869 63 


180 ER28/17 TH-H 12 Functional/Reinforced 32.0 39.0 26.0 070-5610 65 

184 ER28/17 TH-V 10 Functional/Reinforced 29.0 24.0 36.0 070-5565 64 

255 ETD34 TH-H 14 Functional/Reinforced 39.6 43.2 30.5 070-5455 67 


336 ERL35 TH-H 14 Functional/Reinforced 36.5 44.0 28.5 070-5783 66 


Length (mm) 

Width (mm) 

Height (mm) 

Bobbin 

Page 

Number 


Transformers 

Search by Safety 

102 

Safety 

Safety 


Package Size 

Bobbin 

Functional EE13/6/6 070-2860 THT 10 18 17 

Functional EE13/7/4 (EF12.6) 070-4849 THT 8 10 18 

Functional EE13/7/4 (EF12.6) 070-4820 SMD 10 10 20 

Functional EE16/8/5 (EF16) 070-5420 THT 8 24 23 



Functional EE25/13/11 070-5080 THT 8 124 29 

Functional EFD15 070-2745 THT 8 14 33 

Functional EFD15 070-2644 SMD 10 14 34 








Functional EP5 070-4426 SMD 6 1 42 


Functional EP7 070-2150 THT 6 3 44 






Functional EPX7 070-4434 SMD 8 4 55 

Functional EPX9 070-5103 SMD 8 6 56 

Functional ER9.5 070-2008 SMD 8 2 59 



Functional PQ2016 070-5674 THT 14 35 68 





Functional RM4 070-5754 THT 6 6 73 



Functional RM6 070-5657 SMD 8 19 76 



Functional/Reinforced EE25/13/7 (EF25) 070-2607 THT 10 95 30 

Functional/Reinforced EE25/13/7 (EF25) 070-4846 THT 10 99 31 

Functional/Reinforced ER28/14 070-4869 THT 12 133 63 



Functional/Reinforced ERL35 070-5783 THT 14 336 66 

Functional/Reinforced ETD34 070-5455 THT 14 255 67 


Reinforced EE13/6/6 070-5449 THT 8 14 16 

Reinforced EE13/7/4 (EF12.6) 070-5662 THT 9 10 19 



Reinforced EE16/8/5 (EF16) 070-5280 THT 9 22 24 

Reinforced EE16/8/5 (EF16) 070-5642 SMD 12 25 25 



Reinforced EPT18 070-5743 SMD 8 38 57 

Reinforced EPT20 070-5669 THT 10 59 58 

Supplementary EP7 070-4436 SMD 8 3 45 



Supplementary EP13 070-4370 THT 10 14 52 



Mount 

Pins 

Power 

Page 

Number

Transformers 

Search by Height 

Height 

Height (mm) 

Package Size 

Bobbin 

Mount 

5.6 EP5 070-4426 SMD 6 6.6 8.3 1 42 

6.0 ER9.5 070-2008 SMD 8 10.0 12.1 2 59 

6.4 ER11.5 070-5279 SMD 12 13.0 12.7 2 60 

7.6 ER14.5 070-4477 SMD 12 16.0 16.8 5 61 

8.6 EP7 071-0353 SMD 6 10.2 13.4 3 43 

8.9 EFD15 070-2745 THT 8 16.8 16.8 14 33 

8.9 EFD15 070-2644 SMD 10 15.8 22.2 14 34 

8.9 EFD15 070-4265 SMD 12 17.2 22.2 12 35 

9.8 EP7 070-2150 THT 6 10.2 8.3 3 44 

10.2 EE13/7/4 (EF12.6) 070-5662 THT 9 13.7 19.7 10 19 

10.5 EE13/7/4 (EF12.6) 070-4820 SMD 10 13.7 17.7 10 20 

10.5 EP7 070-4436 SMD 8 9.8 9.1 3 45 

10.8 EFD20 070-2609 THT 8 21.1 21.1 34 36 

10.9 EFD20 070-4290 SMD 10 23.1 25.9 34 37 

11.2 RM4 070-5754 THT 6 11.4 11.4 6 73 

11.2 RM5 070-2250 THT 6 14.0 14.0 10 74 

11.3 EPT18 070-5743 SMD 8 19.0 41.7 38 57 

11.4 EFD20 070-4275 SMD 12 23.1 29.1 33 38 

11.4 EP10 070-2720 SMD 8 13.3 15.2 7 46 

11.6 EP10 070-4410 SMD 8 13.3 15.2 8 47 

12.0 EPT20 070-5669 THT 10 22.5 47.0 59 58 

12.3 EPX7 070-4434 SMD 8 10.2 9.1 4 55 

12.6 EP10 070-2365 THT 8 13.3 11.7 7 48 

12.7 EE13/7/4 (EF12.6) 070-4849 THT 8 14.7 16.8 10 18 

12.7 EP13 070-2381 SMD 10 13.5 17.8 14 49 

12.7 EP13 070-4375 SMD 10 13.5 17.8 14 50 

12.7 EP13 070-4300 THT 10 14.0 14.0 14 51 

12.7 EP13 070-4370 THT 10 14.0 14.0 14 52 

12.7 EP13 070-4482 SMD 12 14.0 17.2 14 53 

12.7 EP13 070-4483 SMD 12 14.0 17.2 14 54 

12.7 EPX9 070-5103 SMD 8 10.2 10.2 6 56 

13.2 RM6 070-5757 THT 6 17.7 16.6 18 75 

13.3 EE16/7/5 070-5472 THT 10 16.9 18.8 19 21 

13.5 RM6 070-5657 SMD 8 20.1 21.8 19 76 

13.6 EFD25 070-2710 THT 10 26.0 26.7 69 39 

13.7 EFD25 070-4476 SMD 12 27.0 32.3 70 40 

13.8 EE16/8/5 (EF16) 070-5642 SMD 12 17.8 26.1 25 25 

14.3 EE16/8/5 (EF16) 070-5420 THT 8 18.0 20.3 24 23 

14.5 EFD30 070-5490 THT 12 33.0 35.6 100 41 

15.2 EE13/6/6 070-2860 THT 10 14.7 14.7 18 17 

16.0 EE16/8/5 (EF16) 070-5280 THT 9 20.3 24.4 22 24 

16.0 EE20/10/6 (EF20) 070-5643 THT 14 22.2 25.0 42 28 

17.3 RM8 070-2255 THT 12 21.6 21.6 48 77 

17.5 EE20/10/6 (EF20) 070-4989 THT 10 23.0 22.0 49 26 

18.0 EE16/7/5 070-5278 THT 10 18.0 16.5 22 22 

18.5 EE13/6/6 070-5449 THT 8 15.0 15.8 14 16 

18.7 PQ2016 070-5674 THT 14 23.4 23.4 35 68 

19.1 RM10 070-5680 THT 12 26.2 26.2 90 78 

21.6 EE25/13/7 (EF25) 070-2607 THT 10 27.9 29.2 95 30 

22.9 EE25/13/7 (EF25) 070-5644 THT 14 26.4 31.8 96 32 

23.0 EE20/10/6 (EF20) 070-5248 THT 10 22.3 14.4 46 27 

24.1 PQ3220 070-5050 THT 12 34.0 37.3 148 71 

25.0 ER28/14 070-4869 THT 12 31.0 31.0 133 63 

25.9 PQ2620 070-5729 THT 12 29.2 30.4 79 69 

26.0 ER28/17 070-5610 THT 12 32.0 39.0 180 65 

28.5 ERL35 070-5783 THT 14 36.5 44.0 336 66 

28.6 EE25/13/7 (EF25) 070-4846 THT 10 26.8 20.3 99 31 

29.3 PQ2625 070-5649 THT 12 29.2 30.4 117 70 

29.5 EE25/13/11 070-5080 THT 8 26.0 23.5 124 29 

30.5 ETD34 070-5455 THT 14 39.6 43.2 255 67 

34.3 PQ3230 070-4796 THT 12 35.6 37.3 305 72 

36.0 ER28/17 070-5565 THT 10 29.0 24.0 184 64 


Pins 

Length (mm) 

Width (mm) 

Power 

Page 

Number 


Transformers 

Search by Length 

104 

Length 

Length (mm) 

Package Size 


Bobbin 

Mount 

6.6 EP5 070-4426 SMD 6 8.3 5.6 42 

9.8 EP7 070-4436 SMD 8 9.1 10.5 45 

10.0 ER9.5 070-2008 SMD 8 12.1 6.0 59 

10.2 EP7 071-0353 SMD 6 13.4 8.6 43 

10.2 EP7 070-2150 THT 6 8.3 9.8 44 

10.2 EPX7 070-4434 SMD 8 9.1 12.3 55 

10.2 EPX9 070-5103 SMD 8 10.2 12.7 56 

11.4 RM4 070-5754 THT 6 11.4 11.2 73 

13.0 ER11.5 070-5279 SMD 12 12.7 6.4 60 

13.3 EP10 070-2720 SMD 8 15.2 11.4 46 

13.3 EP10 070-4410 SMD 8 15.2 11.6 47 

13.3 EP10 070-2365 THT 8 11.7 12.6 48 

13.5 EP13 070-4375 SMD 10 17.8 12.7 50 

13.5 EP13 070-2381 SMD 10 17.8 12.7 49 

13.7 EE13/7/4 (EF12.6) 070-5662 THT 9 19.7 10.2 19 

13.7 EE13/7/4 (EF12.6) 070-4820 SMD 10 17.7 10.5 20 

14.0 EP13 070-4300 THT 10 14.0 12.7 51 

14.0 EP13 070-4370 THT 10 14.0 12.7 52 

14.0 EP13 070-4482 SMD 12 17.2 12.7 53 

14.0 EP13 070-4483 SMD 12 17.2 12.7 54 

14.0 RM5 070-2250 THT 6 14.0 11.2 74 

14.7 EE13/7/4 (EF12.6) 070-4849 THT 8 16.8 12.7 18 

14.7 EE13/6/6 070-2860 THT 10 14.7 15.2 17 

15.0 EE13/6/6 070-5449 THT 8 15.8 18.5 16 

15.8 EFD15 070-2644 SMD 10 22.2 8.9 34 

16.0 ER14.5 070-4477 SMD 12 16.8 7.6 61 

16.8 EFD15 070-2745 THT 8 16.8 8.9 33 

16.9 EE16/7/5 070-5472 THT 10 18.8 13.3 21 

17.2 EFD15 070-4265 SMD 12 22.2 8.9 35 

17.7 RM6 070-5757 THT 6 16.6 13.2 75 

17.8 EE16/8/5 (EF16) 070-5642 SMD 12 26.1 13.8 25 

18.0 EE16/8/5 (EF16) 070-5420 THT 8 20.3 14.3 23 

18.0 EE16/7/5 070-5278 THT 10 16.5 18.0 22 

19.0 EPT18 070-5743 SMD 8 41.7 11.3 57 

20.1 RM6 070-5657 SMD 8 21.8 13.5 76 

20.3 EE16/8/5 (EF16) 070-5280 THT 9 24.4 16.0 24 

21.1 EFD20 070-2609 THT 8 21.1 10.8 36 

21.6 RM8 070-2255 THT 12 21.6 17.3 77 

22.2 EE20/10/6 (EF20) 070-5643 THT 14 25.0 16.0 28 

22.3 EE20/10/6 (EF20) 070-5248 THT 10 14.4 23.0 27 

22.5 EPT20 070-5669 THT 10 47.0 12.0 58 

23.0 EE20/10/6 (EF20) 070-4989 THT 10 22.0 17.5 26 

23.1 EFD20 070-4290 SMD 10 25.9 10.9 37 

23.1 EFD20 070-4275 SMD 12 29.1 11.4 38 

23.4 PQ2016 070-5674 THT 14 23.4 18.7 68 

26.0 EE25/13/11 070-5080 THT 8 23.5 29.5 29 

26.0 EFD25 070-2710 THT 10 26.7 13.6 39 

26.2 RM10 070-5680 THT 12 26.2 19.1 78 

26.4 EE25/13/7 (EF25) 070-5644 THT 14 31.8 22.9 32 

26.8 EE25/13/7 (EF25) 070-4846 THT 10 20.3 28.6 31 

27.0 EFD25 070-4476 SMD 12 32.3 13.7 40 

27.9 EE25/13/7 (EF25) 070-2607 THT 10 29.2 21.6 30 

29.0 ER28/17 070-5565 THT 10 24.0 36.0 64 

29.2 PQ2620 070-5729 THT 12 30.4 25.9 69 

29.2 PQ2625 070-5649 THT 12 30.4 29.3 70 

31.0 ER28/14 070-4869 THT 12 31.0 25.0 63 

32.0 ER28/17 070-5610 THT 12 39.0 26.0 65 

33.0 EFD30 070-5490 THT 12 35.6 14.5 41 

34.0 PQ3220 070-5050 THT 12 37.3 24.1 71 

35.6 PQ3230 070-4796 THT 12 37.3 34.3 72 

36.5 ERL35 070-5783 THT 14 44.0 28.5 66 

39.6 ETD34 070-5455 THT 14 43.2 30.5 67 


Pins 

Width (mm) 

Height (mm) 

Page 

Number

Transformers 

Search by Width 

Width 

Width (mm) 

Package Size 

Bobbin 

Mount 

8.3 EP5 070-4426 SMD 6 6.6 5.6 42 

8.3 EP7 070-2150 THT 6 10.2 9.8 44 

9.1 EP7 070-4436 SMD 8 9.8 10.5 45 

9.1 EPX7 070-4434 SMD 8 10.2 12.3 55 

10.2 EPX9 070-5103 SMD 8 10.2 12.7 56 

11.4 RM4 070-5754 THT 6 11.4 11.2 73 

11.7 EP10 070-2365 THT 8 13.3 12.6 48 

12.1 ER9.5 070-2008 SMD 8 10.0 6.0 59 

12.7 ER11.5 070-5279 SMD 12 13.0 6.4 60 

13.4 EP7 071-0353 SMD 6 10.2 8.6 43 

14.0 EP13 070-4300 THT 10 14.0 12.7 51 

14.0 EP13 070-4370 THT 10 14.0 12.7 52 

14.0 RM5 070-2250 THT 6 14.0 11.2 74 

14.4 EE20/10/6 (EF20) 070-5248 THT 10 22.3 23.0 27 

14.7 EE13/6/6 070-2860 THT 10 14.7 15.2 17 

15.2 EP10 070-2720 SMD 8 13.3 11.4 46 

15.2 EP10 070-4410 SMD 8 13.3 11.6 47 

15.8 EE13/6/6 070-5449 THT 8 15.0 18.5 16 

16.5 EE16/7/5 070-5278 THT 10 18.0 18.0 22 

16.6 RM6 070-5757 THT 6 17.7 13.2 75 

16.8 EE13/7/4 (EF12.6) 070-4849 THT 8 14.7 12.7 18 

16.8 EFD15 070-2745 THT 8 16.8 8.9 33 

16.8 ER14.5 070-4477 SMD 12 16.0 7.6 61 

17.2 EP13 070-4482 SMD 12 14.0 12.7 53 

17.2 EP13 070-4483 SMD 12 14.0 12.7 54 

17.7 EE13/7/4 (EF12.6) 070-4820 SMD 10 13.7 10.5 20 

17.8 EP13 070-2381 SMD 10 13.5 12.7 49 

17.8 EP13 070-4375 SMD 10 13.5 12.7 50 

18.8 EE16/7/5 070-5472 THT 10 16.9 13.3 21 

19.7 EE13/7/4 (EF12.6) 070-5662 THT 9 13.7 10.2 19 

20.3 EE16/8/5 (EF16) 070-5420 THT 8 18.0 14.3 23 

20.3 EE25/13/7 (EF25) 070-4846 THT 10 26.8 28.6 31 

21.1 EFD20 070-2609 THT 8 21.1 10.8 36 

21.6 RM8 070-2255 THT 12 21.6 17.3 77 

21.8 RM6 070-5657 SMD 8 20.1 13.5 76 

22.0 EE20/10/6 (EF20) 070-4989 THT 10 23.0 17.5 26 

22.2 EFD15 070-2644 SMD 10 15.8 8.9 34 

22.2 EFD15 070-4265 SMD 12 17.2 8.9 35 

23.4 PQ2016 070-5674 THT 14 23.4 18.7 68 

23.5 EE25/13/11 070-5080 THT 8 26.0 29.5 29 

24.0 ER28/17 070-5565 THT 10 29.0 36.0 64 

24.4 EE16/8/5 (EF16) 070-5280 THT 9 20.3 16.0 24 

25.0 EE20/10/6 (EF20) 070-5643 THT 14 22.2 16.0 28 

25.9 EFD20 070-4290 SMD 10 23.1 10.9 37 

26.1 EE16/8/5 (EF16) 070-5642 SMD 12 17.8 13.8 25 

26.2 RM10 070-5680 THT 12 26.2 19.1 78 

26.7 EFD25 070-2710 THT 10 26.0 13.6 39 

29.1 EFD20 070-4275 SMD 12 23.1 11.4 38 

29.2 EE25/13/7 (EF25) 070-2607 THT 10 27.9 21.6 30 

30.4 PQ2620 070-5729 THT 12 29.2 25.9 69 

30.4 PQ2625 070-5649 THT 12 29.2 29.3 70 

31.0 ER28/14 070-4869 THT 12 31.0 25.0 63 

31.8 EE25/13/7 (EF25) 070-5644 THT 14 26.4 22.9 32 

32.3 EFD25 070-4476 SMD 12 27.0 13.7 40 

35.6 EFD30 070-5490 THT 12 33.0 14.5 41 

37.3 PQ3220 070-5050 THT 12 34.0 24.1 71 

37.3 PQ3230 070-4796 THT 12 35.6 34.3 72 

39.0 ER28/17 070-5610 THT 12 32.0 26.0 65 

41.7 EPT18 070-5743 SMD 8 19.0 11.3 57 

43.2 ETD34 070-5455 THT 14 39.6 30.5 67 

44.0 ERL35 070-5783 THT 14 36.5 28.5 66 

47.0 EPT20 070-5669 THT 10 22.5 12.0 58 


Pins 

Length (mm) 

Height (mm) 

Page 

Number 


Toroids 

Search by Length/Width/Height/Safety 

106 

Length 

Length (mm) 

Height (mm) 

Height 

Package Size 

Package Size 


Header 

Header 

Mount 

Pins 

Length (mm) 

Width (mm) 

2.0 TOR-4P-HT2-SFTY 250-0511 SMD 4 4.4 9.1 80 

2.0 TOR-4P-HT2 250-0889 SMD 4 5.9 8.3 84 

2.2 TOR-4P-HT2.2-SFTY 250-0989 SMD 4 6.1 9.0 81 

2.2 TOR-4P-HT2.2 250-0841 SMD 4 5.1 5.6 85 


2.5 TOR-4P-HT2.5 250-1013 SMD 4 6.6 8.9 86 

2.5 TOR-6P-HT2.5 250-0528 SMD 6 6.6 8.9 92 

3.0 TOR-4P-HT3 250-0973 SMD 4 5.9 8.3 87 

3.3 TOR-4P-HT3.3 250-1009 SMD 4 8.3 8.3 88 


3.6 TOR-6P-HT3.6 250-0593 SMD 6 6.7 9.0 93 

4.0 TOR-8P-HT4 250-0626 SMD 8 5.3 8.0 94 

4.1 TOR-4P-HT4.1 250-0621 SMD 4 6.3 8.9 89 

4.7 TOR-4P-HT4.7 250-0608 SMD 4 7.5 5.4 90 

5.0 TOR-8P-HT4.4 250-0912 SMD 8 6.1 9.4 95 

5.3 TOR-8P-HT5.3 250-0482 SMD 8 8.9 8.6 96 

6.4 TOR-4P-HT6.4 250-0522 SMD 4 9.0 10.1 91 

6.5 TOR-16P-HT6.5 #N/A SMD 16 11.7 9.4 98 

7.6 TOR-8P-HT7.6 250-0931 SMD 8 9.0 8.6 97 

Mount 

Pins 

Width (mm) 

Height (mm) 




5.1 TOR-4P-HT2.2 250-0841 SMD 4 5.6 2.2 85 

5.3 TOR-8P-HT4 250-0626 SMD 8 8.0 4.0 94 

5.9 TOR-4P-HT2 250-0889 SMD 4 8.3 2.0 84 

5.9 TOR-4P-HT3 250-0973 SMD 4 8.3 3.0 87 


6.1 TOR-8P-HT4.4 250-0912 SMD 8 9.4 5.0 95 

6.3 TOR-4P-HT4.1 250-0621 SMD 4 8.9 4.1 89 

6.6 TOR-4P-HT2.5 250-1013 SMD 4 8.9 2.5 86 

6.6 TOR-6P-HT2.5 250-0528 SMD 6 8.9 2.5 92 

6.7 TOR-6P-HT3.6 250-0593 SMD 6 9.0 3.6 93 

7.5 TOR-4P-HT4.7 250-0608 SMD 4 5.4 4.7 90 

8.3 TOR-4P-HT3.3 250-1009 SMD 4 8.3 3.3 88 

8.9 TOR-8P-HT5.3 250-0482 SMD 8 8.6 5.3 96 

9.0 TOR-4P-HT6.4 250-0522 SMD 4 10.1 6.4 91 

9.0 TOR-8P-HT7.6 250-0931 SMD 8 8.6 7.6 97 

11.7 TOR-16P-HT6.5 250-0592 SMD 16 9.4 6.5 98 

Page Number 

Page Number 

Width (mm) 

Width 

Package Size 

Header 

Mount 

Pins 

Length (mm) 

Height (mm) 

5.4 TOR-4P-HT4.7 250-0608 SMD 4 7.5 4.7 90 

5.6 TOR-4P-HT2.2 250-0841 SMD 4 5.1 2.2 85 

8.0 TOR-8P-HT4 250-0626 SMD 8 5.3 4.0 94 

8.3 TOR-4P-HT2 250-0889 SMD 4 5.9 2.0 84 

8.3 TOR-4P-HT3 250-0973 SMD 4 5.9 3.0 87 

8.3 TOR-4P-HT3.3 250-1009 SMD 4 8.3 3.3 88 

8.6 TOR-8P-HT5.3 250-0482 SMD 8 8.9 5.3 96 

8.6 TOR-8P-HT7.6 250-0931 SMD 8 9.0 7.6 97 

8.9 TOR-4P-HT2.5 250-1013 SMD 4 6.6 2.5 86 

8.9 TOR-4P-HT4.1 250-0621 SMD 4 6.3 4.1 89 

8.9 TOR-6P-HT2.5 250-0528 SMD 6 6.6 2.5 92 


9.0 TOR-6P-HT3.6 250-0593 SMD 6 6.7 3.6 93 



9.4 TOR-8P-HT4.4 250-0912 SMD 8 6.1 5.0 95 

9.4 TOR-16P-HT6.5 250-0592 SMD 16 11.7 6.5 98 


10.1 TOR-4P-HT6.4 250-0522 SMD 4 9.0 6.4 91 

Safety 

Safety 

Package Size 

Supplementary TOR-4P-HT2-SFTY 250-0511 SMD 4 80 

Supplementary TOR-4P-HT2.2-SFTY 250-0989 SMD 4 81 



Functional TOR-4P-HT2 250-0889 SMD 4 84 

Functional TOR-4P-HT2.2 250-0841 SMD 4 85 














Header 

Mount 

Pins 

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Mission and Vision 

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INSIGHT DESIGN 9987003 • MARCH 2012

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