Tube-number record
4011-B
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BrandStandard Valves
ClassTriode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
MaterialOxide coated
Absolute Maximum Ratings
Plate Voltage350 V
Plate Dissipation30 W
Cathode Current150 mA
Audio Performance
Power Output2.1 W
Key Features
- Oxide coated filament
- Constant voltage type
- Direct filament heating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A A.F. Amp. | 350 V | 2545.45 | 1650 | 4.2 | 60 mA |
| Class B A.F. Amp. and Mod. (Per Valve) | 350 V | — | — | — | 30 mA |
Application Notes
This valve should be mounted so that the filament is operated in a vertical plane. For replacement purposes only.
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