Understanding the Self Heating Effect of NTC thermistors

An NTC thermistor is an accurate resistor that has a negative temperature coefficient. When the device’s resistance decreases, it is the direct result of an increase in temperature. Thermistors are frequently referred to as resistive temperature sensors. An NTC thermistor is known for having a greater sensitivity coefficient providing a high output resolution. Our thermistors are typically used in temperatures ranging from a low of 40°C to a high of 300°C.

Although our thermistors are practical for a broad spectrum of applications, there are some factors to be considered is the self-heating effect produced by NTC thermistors. The result is a phenomenon that occurs whenever a current is flowing through a thermistor. A thermistor is a resistor, which causes it to dissipate power as heat (when currents are flowing). The heat originates from the core of the thermistors. As more currents flow, the heat will grow. Besides currents, the second most crucial factor for causing the self-heating effect is the environment in which the current is flowing through.

Let our team of engineers help you deal with the self-heating effect and any other problems you have relating to an NTC thermistor.