PTC Thermistors for Overcurrent Protection
Tech Notes
Selection Guides
TDK Product Features
Ceramic PTC thermistors are used instead of conventional fuses to protect electrical devices such as motors, transformers, etc. or electronic circuits against overcurrent.Typical applications are SMPS/UPS, supplies for LED lighting and electrical power meter. They respond to inadmissibly high currents and also, if a preset temperature limit is exceeded. TDK offers leaded disk PTC thermistors up to an operating voltage range of 1000 V and SMD versions up to 230 V.