NTC negative temperature coefficient thermistor
NTC (Negative Temperature Coefficient) is a thermistor phenomenon and material with a negative temperature coefficient that decreases exponentially with increasing temperature. The material is a semiconductor ceramic obtained by sufficiently mixing, molding, sintering, or the like using two or more metal oxides of manganese, copper, silicon, cobalt, iron, nickel, zinc, etc., and can be made to have a negative temperature coefficient. (NTC) thermistor. Its resistivity and material constant vary with material composition ratio, sintering atmosphere, sintering temperature and structural state. Non-oxide type NTC thermistor materials typified by silicon carbide, tin selenide, tantalum nitride, and the like have also appeared.