According to the scope of use, it can be divided into three types.Infrared sensing module price

　　①Low temperature type: The temperature range of low temperature NTC thermistor ceramics is generally 4.2~300K. Generally, two or more transition metal oxides such as Fe, Co, Ni, Mn, and Cu are used as the main components to form a spinel structure. In order to reduce the B value, a small amount of rare earth elements such as La, Nd, Yb, etc. can be doped. Mainly used in aerospace and a series of low temperature engineering and superconductivity research fields;

　　②Medium temperature type: The use temperature range of medium temperature NTC thermistor ceramics is generally between room temperature and 300℃, and most of them are spinel type Mn oxide ceramics;

　　③High temperature type: The temperature range of high temperature NTC thermistor ceramics is generally 300~1000℃, and it is generally composed of ZrO2-Y2O3 series and ZrO2-CaO series fluorite-type materials. The following table shows the main components and applications of typical NTC thermistor ceramics under this classification.

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