The reason why the thermistor is inferior

The application of thermistors Thermistors are widely used in various fields such as household appliances, power industry, communications, military science, and aerospace, and have broad development prospects. What is the reason for the inferiority of the thermistor? Let's follow the small series to understand it!

Due to the unique grain boundary structure of the thermistor, under certain electric field, the grain boundary conduction is instantaneously transformed into the electronic tunnel conduction by the thermal electron emission conduction, and its resistance value sharply decreases with the increase of the voltage, and has excellent nonlinear volts. Security features. Then, when there is an overvoltage, the grain boundary electronic tunneling effect suppresses the peak value of the overvoltage and absorbs a part of the overvoltage, thereby protecting the line or equipment.

However, whether the thermistor is applied to a power line or an electronic circuit, if various types of overvoltages occur frequently, the thermistor will frequently operate to suppress the overvoltage amplitude and the absorption and release surge, thereby protecting the electrical equipment and Components, which are bound to cause the performance of the thermistor to deteriorate or even fail.