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

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Tube-number record

6GD7

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BrandSylvania
ClassReceiving Tube
BaseNoval (B9A)
Filament6.3 V @ 380 mA

Construction

Primary TypeMulti-section
EnvelopeT-6 1/2
Base MaterialSmall Button 9-Pin
Sections2

Filament / Heater

Heater NotesParallel Operation

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation2.1 W
Grid 2 Voltage250 V
Cathode Current20 mA
H-C Voltage100 V

Audio Performance

Key Features
  • Medium mu triode
  • Sharp cutoff pentode
  • VHF oscillator and mixer

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Triode Section125 V1000047004715 mA
Pentode Section170 V120003500007010 mA

Application Notes

Control grid to cathode spacings are of low order of magnitude; avoid voltages above 30V DC/peak AC in tube checkers.

Datasheets

Datasheet: 6GD7.pdf

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

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