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Home > Products > What Are Thermistors?
What Are Thermistors?

Thermistors are ・・・ thermally sensitive elements in a fine ceramic semiconductor.

A thermistor is "a thermally sensitive resistor" that is a semiconductor whose resistance varies significantly with temperature. With ordinary materials, resistance increases slightly as temperature increases, but with NTC thermistors, that Shibaura Electronics is dedicated to, resistance decreases sharply. The following description is applicable only to NTC thermistors.
Thermistors are thermally sensitive elements of sintered fine ceramic semiconductor composed of several transition metal oxides, primarily Mn, Co and Ni. Their operating temperature range is from -50°C to +1000°C that covers the whole range necessary for ordinary temperature control. They are also small, stable and have great sensitivity. Thanks to these features, they are used in large quantities as temperature sensors and temperature compensation elements in consumer electronic appliances and industrial equipment.

Four constants that determine thermistor characteristics

Basically, characteristics of a thermistors is represented by four constants: resistance R, B constant B, thermal dissipation constantデルタand thermal time constantタウ.



The applications of thermistors extend infinitely

Thermistors are primarily used as temperature sensors for temperature measurement and temperature control, as well as for temperature compensation. They are also used in humidity sensors, wind speed sensors, liquid level sensors, gas sensors, infra-red ray sensors, flow sensors and more.
The diagram below shows the fields in which thermistors are used and their various uses.

For more information, please contact us at ovsea@shibaura-e.co.jp


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