What is NTC thermistor resistance ratio?

　　NTC thermistor resistance ratio, also known as B value, material constant and thermal index, refers to the ratio of the zero-power resistance value measured by the thermistor under specified operation at 25° and 85°. It is the material constant of the thermistor, that is, the chip of the thermistor (a semiconductor ceramic) is sintered at high temperature to form a material with a certain resistivity, and there is only one B value for each formula and sintering temperature. is the material constant. NTC thermistors can be widely used in temperature measurement, temperature compensation, suppression of surge current and other occasions.

　　The purpose of NTC thermistor B value test

　　The temperature coefficient of the thermistor is determined by testing the B value of the thermistor. The larger the B value, the larger the temperature coefficient and the higher the sensitivity of the product.

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