PTC Thermistors "POSISTOR®" for Circuit Protection
95Pages

Cat.No.R90E-11 POSISTORr for Circuit Protection

for EU RoHS Compliant • All the products in this catalog comply with EU RoHS. • EU RoHS is "the European Directive 2002/95/EC on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment". • For more details, please refer to our website 'Murata's Approach for EU RoHS' (http://www.murata.com/info/rohs.html).

1 2 3 4 5 6 7 8 9 10 11 12 Part Numbering 2 Basic Characteristics of POSISTORr 5 Selection Guide 7 Application Matrix 8 Application Notes 9 For Overcurrent Protection Chip Type 13 Chip Type Specifications and Test Methods 20 For Overcurrent Protection Narrow Current Band 30V Series 22 For Overcurrent Protection Narrow Current Band 51/60V Series 25 For Overcurrent Protection Narrow Current Band 140V Series 30 For Overcurrent Protection 16V Series 33 For Overcurrent Protection 24/30/32V Series 36 For Overcurrent Protection 56/80V Series 43 For Overcurrent Protection 125/140V Series 49 For...

2 y M e 18 w G r BB t 470 u B1 i PR RB q qProduct ID wSeries rTemperature Characteristics yResistance Tolerance uIndividual Specifications PR PTC Thermistors Chip Type M Q G for Overcurrent Protection BB BC Curie Point 100°C Curie Point 90°C ±20% Special Tolerance Temperature Characteristics B1 Individual Specifications Product ID Code Code Code Series Resistance Tolerance Code (Part Number) tResistance Expressed by three-digit alphanumerics. The unit is ohm (½). The first and second figures are significant digits, and the third figure expresses the number of zeros which follow the two...

y e w r t u i q qProduct ID wSeries rTemperature Characteristics yResistance Tolerance uIndividual Specifications PR PTC Thermistors Chip Type Q R F for Overheat Sensing AR AS BA BB BC BD BE BF BG 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 Special Tolerance Special Tolerance Temperature Characteristics B5 Individual Specifications Product ID Code Code Code Series Resistance Tolerance ±5°C ±3°C Sensing Temp. Tolerance Code tResistance Expressed by three figures. The unit is ohm...

4 qProduct ID eDimensions yResistance Tolerance uIndividual Specifications PT PTC Thermistors H K M N Q ±25% ±10% ±20% ±30% Special Tolerance 3P51 Individual Specifications Product ID Code Resistance Tolerance Code tResistance Expressed by three-digit alphanumerics. The unit is ohm (½). 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. R22 2R2 220 Ex. 0.22½ 2.2½ 22½ Code Resistance Lead...

1. Resistance - Temperature Characteristics POSISTORr has three main 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 temperature which the resistance value is twice the one at 25 °C. 2. Current - Voltage Characteristics (Static Characteristic) This shows the relation between applied...

6 Load Curve of Circuit and Voltage - Current Characteristics of POSISTORr 1. Protective Threshold Current The maximum current value is called the "Protective Threshold Current" for Voltage vs. Current characteristics (static). When smaller than the protective threshold current flows in POSISTORr, it reaches its stability (as shown in figure on right) at the intersection (A) of the load curve (a) and voltage-current characteristics of POSISTORr(c). And POSISTORr works as normal fixed resistor. However, when larger than protective threshold current flows, it stabilizes at the intersection...

What is the potential maximum voltage applied to POSISTORr? How much current flows in the circuit at normal conditions? How much current flows in the circuit at abnormal conditions? Line Voltage 140V Usual Current 200mA Abnormal Current 580mA Part Number Max. Voltage (V) Hold Current at +60°C (mA) Trip Current at -10°C (mA) Max. Current (A) Resistance (at 25°C) (ohm) Thickness (T) (mm) PTGL18AR4R7M6B72B0 125 360 900 1.7 4.7 ±20% 5.5 PTGL18AR3R3M6B72B0 125 420 1050 2.0 3.3 ±20% 5.5 PTGL07AR330M6A51B0 140 100 230 0.5 33 ±20% 6.0 PTGL09AR220M6C61B0 140 140 330 1.0 22 ±20% 6.0...

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Application Part Number Max. Voltage (V) Resistance (at 25 °C) (ohm) Body Diameter (mm) Thickness (mm) Lead Space (mm) Lead Diameter (mm) More Details PTGL13AR100H8B72B0 PTGL12AR150H8B72B0 PTGL14AR180M9C01B0 PTGL09AR250H8B52B0 PTGL09AR390M9C61B0 PTGL07AR560M9B51A0 PTGL07AR820M9B51A0 PTGL07AS121M0N51A0 PTGL07AS181M0N51A0 For high wattage power supply 10 ±25% 14.0 6.0 7.5 0.60 page 15 ±25% 12.5 6.0 7.5 0.60 page 18 ±20% 15.7 6.5 10.0 0.65 page 25 ±25% 10.0 6.0 5.0 0.60 page 39 ±20% 10.0 6.5 6.5 0.65 page 56 ±20% 8.2 6.5 5.0 0.60 82 ±20% 8.2 6.5 5.0 0.60 120 ±20% 6.5 6.5 5.0 0.50 180 ±20% 6.5...