Tube-number record
SV811-3A
0 archive entries
SV811-3A is a tube type in the TubeDatabase archive (class: Low-Mu Audio Power Triode). Recorded specifications: brand Svetlana, year 1999, construction Triode, base Ceramic, socket Special / none, maximum plate voltage 800 V, and maximum plate dissipation 65 W. The archive does not yet hold a photographed example of this type.
BrandSvetlana
ClassLow-Mu Audio Power Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeHard glass
Base MaterialCeramic
Sections1
Filament / Heater
MaterialThoriated-tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 | 450 V | 1700 | 2000 | 3.5 | 83 mA |
| Class A1 (High Voltage) | 800 V | 1700 | 2000 | 3.5 | 90 mA |
| Class A2 | 450 V | 1700 | 2000 | 3.5 | 105 mA |
Application Notes
The anode may be operated while showing small red spots, without decreasing lifetime, as long as dissipation is kept below 65 watts. Maintain at least 4 inches clearance from other components.
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