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
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 250 V | 8500 | 100000 | — | 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
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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