How do NTC thermistors suppress surge current? 2

Application of NTC Thermistor in Surge Protection

In application scenarios such as power lines, switch mode power supplies, BZV55-B5V1 transformer start-up, and motor start-up, NTC thermistors can effectively suppress surge currents during start-up. By connecting NTC thermistors in series in the circuit, when a surge current is generated, the NTC thermistor will quickly respond by increasing its resistance value to limit the magnitude of the current and prevent circuit damage caused by excessive current. With the continuous flow of current and the increase of temperature, the resistance value of NTC thermistor gradually decreases, allowing the current to smoothly transition to normal working state, thus achieving effective protection of the circuit.diode

Advantages of NTC Thermistor in Suppressing Surge Current

NTC thermistors have multiple advantages in suppressing surge currents. Firstly, it can effectively limit the current, reduce the instantaneous impact on the circuit, and protect electronic components from damage. Secondly, NTC thermistors can self regulate and automatically adjust their resistance value with temperature changes, achieving suppression of surge currents without the need for external control. In addition, NTC thermistors have a simple structure, low cost, and are easy to integrate into various circuits.  diode