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Semiconductors & Devices

Diode ModulesDiode Modules


We offer general rectifying diode modules that rectify commercial frequencies and high frequency diode modules for freewheel diodes in inverter circuits and for high-speed switching on a surge voltage absorbing circuit (snubber).

The main switching devices of an inverter have changed from bipolar transistors to high-speed MOS gate devices, such as IGBT. The requirements of radio noise regulations have also increased the importance of not just reverse recovery characteristics, but also software recovery characteristics.

Main Applications

Inverter products/AC motor power supply/AC power supply for batteries/AC power supply for control boards/general AC power supply


  • Lineup includes modules with various types of connections
  • The general rectifying diode modules are 400-2,000V/20-500V
  • Lineup includes the high-speed switching diode modules of 250-1,200V/20-450A (compatible with transistor modules and IGBT/IPM)
  • Complies with the RoHS directive
  • Some products available for snubber circuits.


Image of connection

For Snubber circuit of IGBT & IPM:RM25HG-24S, RM50HG-12S

Data Sheets

View data sheets for Diode Modules