Technical Support Tools

TDK Product Features

ThermoFuse™ varistors are housed components, which consist of a disk varistor in series with a thermally coupled fuse. If the varistor overheats, the thermal fuse activates and disconnects it from the power circuit, thus preventing the occurrence of fires. This increases reliability and protects the equipment. Both the housing and the coating of the varistors are made of flame-retardant material.


Nov. 29, 2018
"Products Conforming to European Union RoHS Directive / Product Information Concerning Revised China RoHS" has been updated.
Oct. 16, 2018
ThermoFuse varistors: Compact overvoltage protection with an integrated fuse
Jul. 17, 2018
Leaded disk varistors, ThermoFuse varistors, SMD disk varistors, Strap varistors, Block varistors: "How to Use ESD/surge Protection Devices : Disk Varistors" has been released.
Apr. 27, 2018
TDK subsidiary EPCOS acquires majority stake in Relyon Plasma
Apr. 26, 2018
Overvoltage protection: New data book for SIOV metal oxide varistors