Tube-number record
6B8G
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BrandBrimar
ClassDouble Diode Pentode
BaseOctal
Filament6.3 V @ 300 mA
Construction
Primary TypeMulti-section
EnvelopeGlass (ST-Shape)
SectionsDouble diode and semi-vari-mu pentode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.25 W
Grid 2 Voltage125 V
Audio Performance
Key Features
- Semi-vari-mu characteristics
- Multiple valve for detector and amplifier use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 100 V | 950 | 300000 | — | 5.8 mA |
| Pentode Section | 180 V | 840 | 1000000 | — | 3.4 mA |
| Pentode Section | 250 V | 1000 | 800000 | — | 6 mA |
| Pentode Section | 250 V | 1120 | 600000 | — | 9 mA |
Application Notes
The pentode sections allow A.V.C. bias application without appreciable distortion.
Datasheets
Datasheet: 6B8G.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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