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BrandBRIMAR
ClassDouble Triode
BaseB9A
Filament12.6V @ 0.15mA
Construction
Primary TypeDouble Triode
EnvelopeGlass
Base MaterialSmall button
Sections2
Filament / Heater
Heater NotesPure tungsten heater designed to withstand frequent heater switching.
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation1.2 W
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- Rugged electrode construction
- Low catastrophic failure rate
- Interface resistance inhibiting cathode alloy
- Controlled glass strain patterns
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 250V | 1600 | 59000 | 95 | 1.25mA |
Application Notes
For use in A.F. and control applications. Designed for high reliability and long life under cut-off conditions.
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