6BH8
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BrandGeneral Electric
ClassTriode-Pentode
Base9-Pin Miniature (Noval)
Filament6.3V @ 600mA
Construction
Primary TypeSharp-cutoff pentode, medium-mu triode
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Warm-up Time11s
Heater NotesControlled heater warm-up characteristic for series-connected heaters.
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation3 W
Grid 2 Voltage300 V
H-C Voltage200 V
Audio Performance
Key Features
- Controlled heater warm-up characteristic
- High figure of merit pentode
- Suitable for video amplifier and IF service
- Triode can be used as diode for video detector
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section (Class A Amplifier) | 200V | 7000 | 150000 | - | 15mA |
| Triode Section (Class A Amplifier) | 150V | 3300 | 5150 | 17 | 9.5mA |
Application Notes
The triode section of the 6BH8 incorporates a lower amplification factor than the 6AU8 triode section and consequently may be used in applications where the lower amplification factor is desired. Suitable for monochrome and color television receivers.
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