PTC Thermistors POSISTOR ® for Circuit Protection - Murata

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!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifi cations or transact the approval sheet for product specifi cations before ordering. R90E.pdf Sep.24,2012 PTGL Series Specifications and Test Methods Item Rating Value Method of Examination Continuous Operating Temperature Resistance Value (at 25°C) Withstanding Voltage Tensile Strength of Lead Wire Terminal Bending Strength of Lead Wire Terminal Solderability -10 to +60 °C Satisfies ratings No problem No damage Lead wire does not come off. Solder is applied around the lead wire covering 3/4 or more of the circumference without gap in the axial direction. The temperature range with maximum voltage applied to the POSISTORr. Resistance value is measured by applying voltage under 1.5Vdc (by a direct current of less than 10mA) at 25°C. But it must be measured after maximum voltage is applied for 180 seconds and then is left for 2 hours at 25°C. As for 16V series, measurement probes should be connected on the lead wire at the point within 2mm from the below side of the forming. Resistance should be measured by 4 wiring method. We apply AC voltage 120% (16V Series: 110%) that of the maximum voltage to POSISTORr by raising voltage gradually for 180±5 seconds at 25°C. (A protective resistor is to be connected in series, and the inrush current through POSISTORr must be limited below max. rated value.) The load is gradually applied to each terminal of POSISTORr until the force of the following table in the axial direction with fixing POSISTORr's body itself and this load is being kept for 10 seconds. Lead Diameter ø0.60mm max. ø0.65mm min. POSISTORr is held so that it is perpendicular to the lead wire with the following lead hanging in the axial direction of the lead wire. The lead wire is slowly bent to 90° and returned. Then it is slowly bent in the opposite direction and returned to original state. Lead Diameter ø0.60mm max. ø0.65mm min. Force 4.90N 9.80N Force 2.45N 4.90N The Lead wire of POSISTORr is soaked in an Isopropyl alcohol (JIS K 8839) or ethanol (JIS K 8101) solution (about 25wt%) of colophony (JIS K 5902) for 5 to 10 sec. And, each lead wire is soaked in molten solder (JIS Z 3282 H60A) at 235±5°C from the bottom to a point of 2.0 to 2.5mm for 2±0.5 sec. Terminal Durability of Soldering Humidity Test ΔR/R25 < =±20% Load Cycle Test at High Temperature ΔR/R25 < =±15% ΔR/R25 < =±20% The lead wire of POSISTORr is soaked in molten solder (JIS Z 3282 H60A) at 350±10°C from the bottom to a point of 2.0 to 2.5mm for 3.5±0.5 sec. After the device is being left at room temperature (25°C) for 24±4 hours, the resistance is measured. POSISTORr is set in an environmental chamber at 40±2°C and 90 to 95% humidity for 500±4 hours. After the device is left at room temperature (25°C) for one hour, the resistance measurement is performed. POSISTORr is set in an environmental chamber at 60±3°C with maximum voltage applied for 1.5 hours and then is left without voltage applied for 0.5 hours. This cycle is repeated for 1000±10 hours, and after the device is left at room temperature (25°C) for one hour, the resistance measurement is performed. (A protective resistor is to be connected in series and the inrush current through POSISTORr must be limited below max. rated value.) 66
!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifi cations or transact the approval sheet for product specifi cations before ordering. R90E.pdf Sep.24,2012 POSISTORr for Circuit Protection Inrush Current Suppression (Less than 100µF) POSISTORr is one of lead type PTC Thermistor that is able to support overcurrent or inrush current issue on the power supply circuit. It is able to integrated circuit for protection from inrush current suppression with POSISTORr and relay or semiconductor switch as thyristor. D max. 6.0 max. T max. c Features 1. Protection against overcurrent situations 2. Automatic reset from protective trip mode 3. Space-saving 4. Various characteristics to meet a suitable resistance value F±1.5 4.0±1.5 ød±0.05 (in mm) c Applications POSISTORr is an integrated solution to work as both current limit resistor and overcurrent fuse. It works as a stable resistor in normal operation and products itself against overcurrent situation. It can be replaced from normal resistor or the resistor with temperature fuses solution as Fig.1. POSISTORr + - Load + - Load Fig.1 POSISTORr works as normal resistor in normal condition, and it works as protector against over current situation on the circuit. 1. High-power switching power supply (LCD TV) 2. The power supply for inverter on outside unit for Air-conditioner 3. The power supply for inverter type fluorescent lamp 4. Other SW type power supply 10 Part Number Max. Voltage (V) Resistance (at +25°C) (ohm) Max. Inrush Current (A) Max. Applying Time of Inrush (ms) Body Diameter (D) (mm) Thickness (T) (mm) Lead Space (F) (mm) Lead Diameter (phi d) (mm) PTGL07AS121M0N51B0 280 120 ±20% 8.46 peak 10 7.8 6.0 5.0 0.5 PTGL07AS181M0N51B0 280 180 ±20% 6.22 peak 10 7.8 6.0 5.0 0.5 PTGL07AS201M0N51B0 280 200 ±20% 5.66 peak 10 7.8 6.0 5.0 0.5 Max. inrush current shows the maximum inrush current value which be introduced into "POSISTOR" at operating temperature range. Max. applying time of inrush shows the maximum applying time of inrush current value at operating temperature range. Operating temperature range is -40 to +105°C. Taping type of part numbers with "A0" is available. 67
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PTC Thermistors POSISTOR ® for Circuit Protection - Murata

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