Temperature Sensors - Thermistors

Thermistors generally refer to a temperature-dependent resistor that has a negative temperature coefficient (NTC). The resistance decreases exponentially with increasing temperature of the component.
The benefits of NTCs based on semiconducting ceramics are high precision whereas thick film types are more cost-efficient. The current flowing through a thermistor may cause some heat which increases the thermistors temperature above the temperature of the environment. For the small currents this effect of self heating is negligible (unloaded thermistor).