Advantages of NTC thermistors

1. The stability of an NTC thermistor is a measure of its ability to retain specified characteristics after specified environmental or electrical test conditions. Long-term exposure to high temperatures above 105 ° C or above 105 ° C may result in a standard NTC epoxy or a single NTC thermistor drifting out of its original manufacturing tolerances. The stability of the thermistor can be through thermal expansion, affected mechanical stress, or wet conditions, however, the NTC thermistor has good stability when operated under normal conditions. Manufacturers need materials and processes throughout the manufacturing process with excellent control effects;

2. The thermistor made of semiconductor material, its resistance value decreases rapidly with the increase of temperature, because the number of carriers in the semiconductor increases exponentially with the increase of temperature, so the resistance of ntc thermistor is pressed The index law is rapidly decreasing. The thermistor is characterized by high sensitivity, the temperature coefficient of resistance is about 10 times higher than that of pure metal platinum; the resistivity is large, and the small volume can have a large resistance, so that the lead resistance can be neglected;

3. Thermistor has small thermal inertia and can measure the temperature with rapid change. It is often used in temperature control or semiconductor point thermometers, and can also be used in voltage regulators, automatic control and remote measuring instruments. The thermistors can be divided into three categories according to the temperature coefficient of resistance:

(1) Positive resistance temperature coefficient thermistor;

(2) Critical resistance temperature coefficient thermistor;

(3) Negative resistance temperature coefficient thermistor.