New 5C4M / GZ32 / GZ34 View larger

5C4M / GZ32 / GZ34

Tough mil. spec full wave rectifier tubes manufactured in Russia by Sovtek in the 1970’s. These 8 pin glass octal based tubes come with huge steel plates, two thick mica spacers, and top getters. They can easily handle up to 400 plate volts at currents up to 250 mA. They are marked 5U4M OTK with various other codes. Photo is typical of available stock.


  • New Bulk

Tubes matching

  • Tubes matching

    Do you want tube matching (matching +$5.00) accomplished by Amplitrex AT-1000?

  • Matching

Data sheet

TypeHalf-Wave and Full-Wave Rectifier Tube, Mil-SPEC Military Specifications Tubes
Base8 pin Octal
FonctionFull-wave rectifier