6AK9
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BrandGeneral Electric
ClassDissimilar-Double-Triode Pentode
BaseE12-74 Button 12-Pin
Filament6.3V @ 1600mA
Construction
Primary TypeCompactron
EnvelopeT-12 Glass
Base MaterialGlass
Sections3
Filament / Heater
MaterialCoated Unipotential
Heater NotesHeater voltage tolerance +/- 0.6V
Absolute Maximum Ratings
Plate Voltage850 V
Plate Dissipation10 W
Grid 2 Voltage250 V
Grid 1 Voltage-150 V
Cathode Current80 mA
H-C Voltage200 V
Audio Performance
Key Features
- Multi-function compactron
- Beam pentode
- Dissimilar triodes
- 10 Watts Pentode Plate Dissipation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section - Vertical Deflection | 150V | 6200 | 16400 | - | 49mA |
| Triode Section 1 - Sync Clipper | 150V | 3900 | 11000 | 43 | 5.64mA |
| Triode Section 2 - Vertical Oscillator | 150V | 2350 | 8500 | 20 | 5.65mA |
Application Notes
Pentode section suitable for vertical-deflection amplifier service. Triode 2 suited for vertical oscillator use (mu=20). Triode 1 suited for sync-clipper applications (mu=43).
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