6GH8-A
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BrandGeneral Electric
ClassTriode-Pentode
BaseSmall Button 9-Pin
Filament6.3V @ 450mA
Construction
Primary TypeSharp-cutoff pentode and medium-mu triode
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Warm-up Time11s
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage350 V
Plate Dissipation2.65 W
Grid 2 Voltage330 V
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- Sharp-cutoff pentode
- Medium-mu triode
- Separate cathodes
- Controlled interelectrode leakage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 125V | 7500 | 200000 | - | 12mA |
| Triode Section | 125V | 8500 | 5400 | 46 | 13.5mA |
Application Notes
The pentode section is intended primarily for service as an oscillator in the horizontal-deflection system of television receivers.
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