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GR 33

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ClassCold Cathode Relay Tube
Base7-pin miniature

Construction

Primary TypeCold Cathode
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage290 V
Grid 1 Voltage137 V
Cathode Current25 mA

Audio Performance

Key Features
  • Molybdenum cathode
  • High stability starter breakdown voltage
  • Independent of illumination
  • Direct control and capacitive control

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
DC operation220V---10mA

Application Notes

Electronic timers, automatic switching, voltage monitoring and indication. Requires positive anode and starter for DC operation.

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