A thermistor is a small electronic component whose resistance will change when the temperature changes. Types are divided into PTC and NTC.
NTC is a Negative Temperature Coefficient Thermistor whose resistance decreases as the temperature rises. When a properly rated NTC thermistor is setting in a circuit, it is ideal for use as an in-line inrush current limiter.
The resistance value is high at first, then the inrush current will flow in and cause the temperature of the thermistor to spike, and when the inrush current spikes, the resistance value will drop to a lower power loss level. Then, during normal circuit current flow through the thermistor, the thermistor maintains a sufficiently high temperature level to maintain a low level of power loss, making it more ideal than a fixed value resistor.
Application
Temperature sensor | Temperature compensation element
