Tube-number record
9BR8
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9BR8 is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand Brimar, construction Multi-section, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 2.8 W. The archive does not yet hold a photographed example of this type.
BrandBrimar
ClassTriode-Pentode
BaseNoval (B9A)
Filament9.45 V @ 300 mA
Construction
Primary TypeMulti-section
EnvelopeT-6 1/2
Sections2
Filament / Heater
Heater Notes9-pin miniature construction
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 150 V | 8500 | 5000 | 40 | 18 mA |
| Pentode Section | 250 V | 5200 | 400000 | — | 10 mA |
Application Notes
The electrical characteristics are similar to those of the 9U8.
Datasheets
Datasheet: 9BR8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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