7C25
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BrandCentral Electronic Manufacturers
ClassPower Triode
Construction
Primary Typetriode
EnvelopeGlass/Metal
Base MaterialKovar grid and filament seals
Sections1
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage5000 V
Plate Dissipation2500 W
Grid 1 Voltage-1500 V
Cathode Current10000 mA
Audio Performance
Power Output3100 W
Key Features
- Forced-air-cooled
- Sturdily-supported, double-spiral thoriated tungsten filament
- Rugged kovar grid and filament seals
- Flexible leads constructed of O.F.H.C. copper
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radio-Frequency Power Amplifier and Oscillator -- Class C Telegraphy | 4000V | - | - | 25 | 1000mA |
| Radio-Frequency Power Amplifier and Oscillator -- Class C Telegraphy | 4500V | - | - | 25 | 1200mA |
| Radio-Frequency Power Amplifier and Oscillator -- Class C Telegraphy | 5000V | - | - | 25 | 1200mA |
| Plate-Modulated Radio-Frequency Power Amplifier -- Class C Telephony | 3500V | - | - | 25 | 825mA |
Application Notes
Specifically designed for industrial and communication applications. Full input ratings apply to 30 mc. Reduced ratings applicable for useful power outputs extending to 50 mc.
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