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 PTC Thermistors (POSISTORr) for Overcurrent Protection / for Inrush Current Suppression / for Overheat Sensing Lead Type (Part Number) PT GL 07 AR 220 M 3P51 A0 q w e r t y u i qProduct ID Product ID PT wSeries Code FL FM GL eDimensions Code 04 05 07 09 10 12 13 14 16 18 20 rTemperature Characteristics Code AR AS BA BB BC BD BE BF BG BH PTC Thermistors Series for Overheat Sensing Lead Type for Overheat Sensing with Lug-terminal for Current Control (Over Current Protection · Inrush Current Suppression) Lead Type Dimensions Nominal Body Diameter 4mm Series Nominal Body Diameter 5mm Series Nominal Body Diameter 7mm Series Nominal Body Diameter 9mm Series Nominal Body Diameter 10mm Series Nominal Body Diameter 12mm Series Nominal Body Diameter 13mm Series Nominal Body Diameter 14mm Series Nominal Body Diameter 16mm Series Nominal Body Diameter 18mm Series Nominal Body Diameter 20mm Series Temperature Characteristics Curie Point 120°C Curie Point 130°C Curie Point 110°C Curie Point 100°C Curie Point 90°C Curie Point 80°C Curie Point 70°C Curie Point 60°C Curie Point 50°C Curie Point 40°C tResistance Expressed by three-digit alphanumerics. The unit is ohm (Ω). The first and second figures are significant digits, and the third figure expresses the number of zeros which follow the two figures. If there is a decimal point, it is expressed by the capital letter "R." In this case, all figures are significant digits. Ex. Code Resistance R22 2R2 220 0.22Ω 2.2Ω 22Ω yResistance Tolerance Code H K M N Q uIndividual Specifications Ex. iPackaging Code A* B* Code 3P51 Resistance Tolerance ±25% ±10% ±20% ±30% Special Tolerance Individual Specifications Lead Type, others Packaging Ammo Pack Bulk 4
!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 Basic Characteristics of POSISTORr cBasic Characteristics POSISTORr has three main characteristics. 1. Resistance - Temperature Characteristics Although there is a negligible difference between the normal and "Curie Point" temperature, POSISTORr shows almost constant resistance-temperature characteristics. Yet they have resistance-temperature characteristics that cause resistance to sharply increase when the temperature exceeds the Curie Point. The Curie Point (C.P.) is defined as the temperature at which the resistance value is twice the one at 25°C. Resistance - Temperature Characteristic 10 5 Resistance Change Ratio, R/R25°C 10 4 BD BC BB AR 10 3 10 2 10 1 0 50 100 150 200 C.P. (AR: 120°C) Temperature (°C) 2. Current - Voltage Characteristics (Static Characteristic) This shows the relation between applied voltage when voltage applied to POSISTORr causes balancing of inner heating and outer thermal dissipation and stabilized current. This has both a maximum point of current and constant output power. Current - Voltage Characteristic (Static Characteristic) 3 10 Ta=25°C Current (mA) 2 10 10 1 2 0.1 1 10 10 Voltage (V) 3. Current - Time Characteristics (Dynamic Characteristic) This shows the relation between current and time before inner heating and outer thermal dissipation arrive at equilibrium state. This features having large initial current and abruptly continuous attenuating portion. Current - Time Characteristic (Dynamic Characteristic) 1.5 Ta=25°C Current (A) 1.0 0.5 Time (sec.) 5
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PTC Thermistors POSISTOR ® for Circuit Protection - Murata

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