12B8GT
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BrandArcturus
ClassMidget Triode-Pentode
BaseOctal
Filament12.6V @ 300mA
Construction
Primary TypeTriode-Pentode
EnvelopeGT
Sections2
Filament / Heater
Absolute Maximum Ratings
Audio Performance
Key Features
- Midget construction
- Triode-Pentode combination
- Designed for limited space
- AC-DC receiver application
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 90V | 1800 | 200000 | 360 | 7.6mA |
| Triode Section | 90V | 2400 | 37500 | 90 | 2.8mA |
Application Notes
Type 12B8GT has been designed primarily for small AC-DC receivers wherein very limited space is available. The pentode section may be used as a conventional RF or IF amplifier and the triode section as a biased or grid-leak detector.
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