5C/450-A
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BrandStandard Valves
ClassPentode
BaseExtra large 4 pin bayonet base
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation450 W
Grid 2 Voltage650 V
Audio Performance
Typical THD5%
Power Output1070 W
Key Features
- Thoriated tungsten filament
- Constant voltage type
- High power output up to 1070W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Unmodulated Amplifier (Case 1) | 2000V | 6500 | - | - | 520mA |
| Unmodulated Amplifier (Case 2) | 2500V | 6500 | - | - | 590mA |
| Class C Amplifier - Suppressor Grid Modulation | 2500V | - | - | - | 300mA |
Application Notes
This valve operates at a high temperature. Free circulation of air is absolutely essential. Forced air cooling (fan) is recommended in confined spaces. Cabinet walls should have a matt finish.
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