6SN7-GTB
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BrandGeneral Electric
ClassTwin Triode
BaseOctal
Filament6.3V @ 600mA
Construction
EnvelopeT-9
Base MaterialOctal
Sections2
Filament / Heater
Warm-up Time10.5s
Heater NotesControlled heater warm-up characteristic for series-connected heaters
Absolute Maximum Ratings
Plate Voltage450 V
Plate Dissipation5 W
Grid 1 Voltage600 V
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- Medium-mu twin triode
- Controlled heater warm-up
- Series-connected heater compatible
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 90V | 3000 | 6700 | 20 | 10mA |
| Class A Amplifier | 250V | 2600 | 7700 | 20 | 9mA |
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