Conductive mechanism of NTC thermistor

The negative temperature coefficient of thermistor generally refers to the semiconductor materials or components with a large negative temperature coefficient. The so-called NTC thermistor is a negative temperature coefficient thermistor.

It is made of manganese, cobalt, nickel, copper and other metal oxides as the main materials, using ceramic technology.

These metal oxide materials have semiconductor properties because they conduct electricity in a way similar to semiconductors such as germanium and silicon. At low temperatures, the number of carriers in these oxides is small.

As the temperature increases, the number of carriers increases, so the thermistor resistance decreases.

Thermistors vary in the range of 10O to 1000000 ohms at room temperature with temperature coefficients ranging from -2% to -6.5%.

Thermistor can be widely used in temperature measurement, temperature compensation, inrush current suppression, temperature measurement, temperature control, temperature compensation and so on.

Temperature coefficient thermistor composition refers to the resistance decreases exponentially as the temperature increases.

Most of the thermistors with negative temperature coefficient and materials are oxide ceramics with spinel structure or other structures.

Negative temperature coefficient thermistor temperature its measurement range is generally -10 ~ +300℃, thermistor can also do -200 ~ +10℃, and even can be used for temperature measurement in +300 ~ +1200℃ environment.