4021-A
0 Tubes in archive
BrandStandard Valves
ClassTriode
BaseMedium 4-pin bayonet thrust
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
MaterialOxide coated filament
Absolute Maximum Ratings
Audio Performance
Key Features
- Oxide coated filament
- Constant current type
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 130V | 3000 | 2050 | 6 | 22.5mA |
| Class A | 130V | - | 1750 | - | 28.4mA |
| Class A | 130V | - | 2100 | - | 17mA |
| Class A | 160V | - | 1800 | - | 32.5mA |
Sort by
Showing 1 to 0 of 0 results