NTC16D-15

NTC NTC THERMISTOR NTC NTC THERMISTOR OUTLINE 2 1200 4 This is a Negative Temperature Coefficient Resistor Whose resistance changes with ambient temperature changes. Thermistor comprises 2or 4 kinds of metal oxides of iron, nickel,cobalt, manganese and copper, being shaped and Sintered at high temperature(1200 to 1500 ) 1500 NTC Rt Critical Technical Parameters of NTC Thermistor Rt---Resistance Value at Zero-power It's a resistance which is got at a fixed temperature on a basis of a testing power which causes resistance to Vary in a range which can be ignored in relation to the total testing eror. R25 R25---Resistance Value at Rated Zero-power The design resistance of the thermistor usually refers to the resistance value got at Zero-power at 25 , which is usually indicated on the thermistor. B Value B value stands for the thermal exponent at a negative temperature coefficient. lt's defined as a ratio of the balance between the natural logarithms of resistance values at zeropower to the balance between the reciprocals of the two temperatures.The formula is as below: RT1 ( 1 / T1 Rt2 1 ) T T R = 1 2 ln T1 T2 RT2 T2 T1 R T1 ( 1 / T1 R t2 1 ) T1 T2 R = ln T1 T2 R T2 T2 T1 25 B B B=ln B=ln RT1 RT2 T1 T2 B 25 ( 298. ( 323.15K ) ,B In this formula: RT1 is the resistance at Zero-power when the temperature is T1 RT2 is the resisrtance at Zero-power when the temperature is T2 Unless otherwise specified, B value is got by calculating the Zero-power resistances at 25 working te...