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

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Tube-number record

6BK5

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BrandGeneral Electric
ClassReceiving Tube
BaseNoval (B9A)
Filament6.3 V @ 1.2 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeT-6 1/2
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage250 V
H-C Voltage100 V

Audio Performance

Typical THD7%
Power Output3.5 W
Key Features
  • Extremely high power sensitivity
  • High transconductance
  • High plate efficiency

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Amplifier250 V8500100000—35 mA

Application Notes

Miniature beam pentode designed primarily for use in the audio-frequency power output stage of television and radio receivers.

Datasheets

Datasheet: 6BK5.pdf

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

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