9BR8
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BrandBrimar
ClassTriode-Pentode
Base9-pin miniature (E9-1)
Filament9.45V @ 300mA
Construction
Primary TypeTriode-Pentode
EnvelopeT-6 1/2
Sections2
Filament / Heater
Heater Notes9-pin miniature construction
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.8 W
Grid 2 Voltage300 V
H-C Voltage250 V
Audio Performance
Key Features
- Local oscillator-pentode mixer
- FM or Television receivers
- Electrically independent sections
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 150V | 8500 | 5000 | 40 | 18mA |
| Pentode Section | 250V | 5200 | 400000 | - | 10mA |
Application Notes
The electrical characteristics are similar to those of the 9U8.
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