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Aug. 2018 | [Application Note] PTC Limit Temperature Sensors (Protection Device)

How to use PTC limit temperature sensors

The Optimal Applications for Chip Varistors for ESD Countermeasures PTC thermistors have the property that their resistance rises significantly when a certain temperature is exceeded. This property makes them suitable for use as temperature protection devices that detect defined high temperatures to protect circuits from overheating. TDK offers various types of PTC limit temperature sensors and motor protection sensors that incorporate PTC thermistors and serve as temperature protection devices. This article describes typical applications of such sensors.