6BA8
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BrandSylvania
ClassTriode Pentode
Base9-Pin Miniature
Filament6.3V @ 600mA
Construction
Primary TypeTriode Pentode
EnvelopeT-6 1/2
Base MaterialMiniature Button
Sections2
Filament / Heater
Warm-up Time11s
Heater NotesMaximum Heater-Cathode Voltage: 200V DC and Peak; 100V Heater Positive
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation3.25 W
Grid 2 Voltage300 V
Grid 1 Voltage-50 V
Audio Performance
Key Features
- Series heater string compatibility
- T-6 1/2 Bulb size
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Triode Section | 200V | 2700 | 6700 | 18 | 8mA |
| Class A Pentode Section | 200V | 9000 | 400000 | - | 13mA |
Application Notes
The triode may be used as a sync clipper or sync separator. The pentode section is designed primarily to serve as a video amplifier.
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