Tube-number record
4019-A
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BrandStandard Valves
ClassTriode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
MaterialOxide coated
Absolute Maximum Ratings
Plate Voltage190 V
Audio Performance
Key Features
- Oxide coated filament
- Constant current type
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Nominal | 130 V | 1270 | 5500 | 7 | 6.8 mA |
| Typical Operation 1 | 130 V | — | 4800 | — | 9.7 mA |
| Typical Operation 2 | 160 V | — | 4700 | — | 9.8 mA |
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