AUDIO POWER TRIODE
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BrandSvetlana
ClassPower Triode
BaseSvetlana SK2A or equivalent
Filament6.3V @ 2.65mA
Construction
Primary TypePower Triode
EnvelopeCeramic-metal forced-air-cooled
Base MaterialCeramic
SectionsSingle
Filament / Heater
Heater NotesOxide-coated unipotential cathode; 6.3V +/- 0.3V
Absolute Maximum Ratings
Plate Voltage1800 V
Plate Dissipation300 W
Grid 1 Voltage-400 V
Cathode Current470 mA
H-C Voltage100 V
Audio Performance
Typical THD5%
Power Output15 W
Key Features
- Ceramic-metal transmitting-tube construction
- Extreme ruggedness
- Low microphonics
- Solid copper anode
- Exceptional linearity
- Coaxial cone mounting
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Audio Amplifier (single tube) | 500V | 20000 | 450 | 9 | 80mA |
| Class AB1 Audio Power Amplifier, Push-Pull | 500V | - | 450 | 9 | 150mA |
Application Notes
Suitable for single-ended Class A1 or push-pull Class A1 or AB1 operation. Forced-air cooling required for dissipation >30W.
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