4043-C
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BrandStandard Telephones and Cables (STC)
ClassTriode
BaseAmerican medium 4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
MaterialOxide coated
Absolute Maximum Ratings
Plate Voltage600 V
Plate Dissipation35 W
Cathode Current110 mA
Audio Performance
Power Output73 W
Key Features
- Grid designed to reduce grid emission
- Higher undistorted output than 4043-A/B
- Oxide coated constant voltage filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Operation | 600V | 2285.7 | 3500 | 8 | 50mA |
| Class AB A.F. Amp (Balanced 2-valve) | 600V | - | 6000 | - | 12mA |
| Class B Radio Frequency Telephony | 600V | - | - | - | 87mA |
| Class C Radio Frequency Telephony | 400V | - | - | - | 131mA |
| Class C Radio Frequency Telegraphy | 600V | - | - | - | 130mA |
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