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Metal Oxide Varistors

2

T-温度（以 K 表示）

B-B 值

T-temperature

B-B value

耗散系数



在规定的环境温度下，热敏电阻器耗散功率变化与其相应温度变

化之比，即

At rated ambient temperature, it is the radio of consumption

power change rate of thermistor to the change of the

corresponding temperature,namely:

T

P





在工作温度范围内，

δ随着环境温度的变化而变化。

In the range of operating temperature, δ has a little change with

the ambient.

热时间常数



在零功率条件下，当温度发生突变时，热敏电阻体温度变化了始

末两个温度差的

63.2%所需的时间。

即：

At zero power,it is measured as time in seconds which needed

for thermistor temperature change of 63.2% difference between

initial and final thermistor temperature when the temperature

breaks.



C

电阻

-温度特性

Resistance-Temperature Characteristic

热敏电阻器的零功率电阻值与其电阻体温度之间的依赖关系。

The reliant relationship between the zero power resistance of

thermistor and its temperature.

R 值与 B 值关系

R-T curve NTC thermisor

热敏电阻器的零功率电阻值与其电阻体温度之间的依赖关系。

The reliant relationship between the zero power resistance of

thermistor and its temperature.

B 值相同，阻值不同的 R-T 特性曲线示意图

相同阻值，不同

B 值的 R-T 特性曲线示意图

R-T curve based on same B value, different resistance

R-T curve based on different B value, same resistance

MF51 玻封测温型 NTC 热敏电阻器系列

MF51 Temperature-Mesurement chip in glass NTC Thermistor series