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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

GZ33

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ClassFull-Wave Rectifier
BaseOctal
Filament5 V @ 3 mA

Construction

Primary TypeVacuum Tube
Rectifier TypeIndirectly heated full-wave
EnvelopeGlass
Base MaterialPlastic
SectionsDouble

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage500 V
Cathode Current300 mA

Audio Performance

Key Features
  • Indirectly heated
  • Full-wave
  • Octal base

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Capacitor input300 V—140—250 mA
Capacitor input400 V—200—250 mA
Capacitor input500 V—250—250 mA

Application Notes

Capacitor and choke input ratings provided.

Datasheets

Datasheet: GZ33.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    Choke input300 V———300 mA
    Choke input400 V———300 mA
    Choke input500 V———300 mA