TDK Product Features

Single-phase induction motors (e.g. in compressors for refrigerators and air conditioners) can effectively be started when an auxiliary coil is used in the starting phase. PTC thermistors are used for delaying the switch-off of the starter auxiliary coil (after the motor has accelerated) to protect the coil from damage. TDK motor start PTCs have been designed for a large number of switching cycles (>100,000) at high starting powers.


Nov. 29, 2018
"Products Conforming to European Union RoHS Directive / Product Information Concerning Revised China RoHS" has been updated.
Jul. 4, 2017
PTC Thermistors for Motor Start, PTC Thermistors for Switching Applications, PTC Thermistors as Heating Elements: A new release of the product portals.
Apr. 12, 2017
“Classifications of Medical Devices” and TDK Products’ Coverage of Those Classes has been released.
Mar. 12, 2017
Release of "myTDK", our membership-based service
Apr. 19, 2016
Application Guides|Added Medical equipment
  • E-mail magazine

Product spotlight