Tube-number record
4069-A
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BrandStandard Valves
ClassPentode
Base5-pin
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation100 W
Grid 2 Voltage400 V
Audio Performance
Key Features
- Thoriated tungsten filament
- Constant voltage type
- American Giant 5-pin base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Constants (Gm Measurement) | 2000 V | 4500 | — | — | — |
| Class B Telephony | 2000 V | — | — | — | 75 mA |
| Class C Telephony - Control grid modulated | 2000 V | — | — | — |
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