NTC Thermistor Semiconductor thermistor materials
December 15, 2022
Semiconductor thermistor materials
Such materials include single crystal semiconductor, polycrystalline semiconductor, glass semiconductor, organic semiconductor and metal oxide. They all have very large resistance temperature coefficient and high tortoise resistance rate, and the sensitivity of the sensor made of them is also quite high. According to the resistance temperature coefficient, it can also be divided into negative resistance temperature coefficient materials and positive resistance temperature coefficient materials In a limited temperature range, the negative resistance temperature coefficient material a can reach - 6 * 10-2/℃, and the positive resistance temperature coefficient material a can reach above - 60 * 10-2/℃. For example, barium carbonate ceramic is an ideal semiconductor material with positive resistance temperature coefficient. The above two materials are widely used in temperature measurement, temperature control, temperature compensation, switching circuit, overload protection, time delay and other aspects, such as making thermistor thermometers, thermistor switches and thermistor thermometers, thermistor switches and thermistor delay relay errors respectively.
Due to the exponential relationship between resistance and mobility, this kind of material has narrow temperature measurement range and poor uniformity