Tube-number record
6BA8A
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BrandSylvania
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 0.6 mA
Construction
Primary TypeMulti-section
EnvelopeT6-1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesControlled heater warm-up time for series strings
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation3.25 W
Grid 2 Voltage300 V
Grid 1 Voltage-50 V
H-C Voltage200 V
Audio Performance
Key Features
- Miniature medium-mu triode
- Sharp cutoff pentode
- Controlled plate knee characteristic
- Controlled heater warm-up
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 200 V | 9000 | 400000 | — | 13 mA |
| Triode Section | 200 V | 2700 | 6700 | 18 | 8 mA |
Application Notes
Triode section intended for sync separator; pentode section intended for video amplifier.
Datasheets
Datasheet: 6BA8A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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