4052-A
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BrandStandard Valves
ClassPentode
BaseAmerican medium 5-pin
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage1500 V
Plate Dissipation60 W
Grid 2 Voltage300 V
Audio Performance
Key Features
- Constant voltage filament
- Anode connected to top cap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Characteristics | 1250V | 3000 | 500000 | 1500 | - |
| Class B Telephony | 1250V | - | - | - | 43mA |
| Class C Telephony - Control grid modulated | 1250V | - | - | - | 42mA |
| Class C Telegraphy - Unmodulated | 1250V | - | - | - | 80mA |
Application Notes
Thoriated tungsten filament. Pentode suitable for Class B and Class C operation.
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