The Classification of Thermistors

1. Semiconductor thermistor
These materials include single crystal semiconductors, polycrystalline semiconductors, glass semiconductors, organic semiconductors, and metal oxide semiconductors. They all have high resistance temperature coefficient and high resistivity, and the sensors composed of them are very sensitive.
2. Metal thermistor
This material is widely used in thermal resistance temperature measurement, current limiter and automatic constant temperature heating element. Such as platinum resistance thermometer, nickel resistance thermometer, copper resistance thermometer, platinum side temperature sensor, etc., have obvious high precision and stability in various media (including corrosive media).
3. NTC thermistor

NTC refers to the thermistor phenomenon and material whose resistance decreases exponentially as the temperature rises and has a negative temperature coefficient. The material is a semiconductor ceramic made of two or more metal oxides such as manganese, copper, silicon, cobalt, iron, nickel, zinc, etc., which are fully mixed, molded, and sintered, and can be made into a negative temperature coefficient (NTC) thermistor. Its resistivity and material constants vary with the material composition ratio, sintering atmosphere, sintering temperature and structural state. Now there are non-oxide NTC thermistor materials represented by silicon carbide, tin selenide, tantalum nitride, etc.

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