Thermistor is a semiconductor component whose resistance changes significantly with the change of the (sensed) temperature. It’s called
NTC thermistor when its resistance decreases when the temperature increases. NTC thermistor is widely used in home appliances.
There are some main parameters for NTC thermistor:
1. Self-heating: When we measure or use NTC thermistor, there is always a current going through it, and this current heat up the thermistor. When self-heating occurs, the resistance of NTC thermistor drops, which produces some dynamic changes in measurement and other application. Therefore, it is critical to control self-heating. It should avoid self-heating when using NTC thermistor in temperature measurement. It should take advantage of self-heating when it is used in liquid level or wind speed measurement.
Physical photo of a typical NTC thermistor
There are various types of NTC thermistor in Analog Technologies, Inc., such as
ATH100KR8 and
ATH10KR8B, etc. Moreover, we also provide NTC thermistor with a ring lug outside its thermistor head, which is used for easy mounting and fixing. More types of
NTC thermistors with high stability and accuracy can be found in our website.
To be continued…
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