HK 54
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BrandHeintz and Kaufman
ClassGeneral Purpose Triode
BaseMedium 4 Pin Ceramic
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialCeramic
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation50 W
Grid 1 Voltage-750 V
Cathode Current150 mA
Audio Performance
Power Output260 W
Key Features
- Radiation cooled
- Tantalum elements
- Getter-less design
- No internal insulators
- High UHF efficiency
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Unmodulated | 3000V | - | - | 27 | 100mA |
| Class C Plate Modulated | 2000V | - | - | 27 | 110mA |
| Class B Audio (2 tubes) | 2500V | - | - | 27 | 180mA |
Application Notes
Special design permits high voltage operation and unusual UHF efficiency. Suitable for Class C amplifiers, Class B audio amplifiers, frequency multipliers, and crystal oscillators. The tantalum plate is designed to run at a dull cherry red color at 50 watts dissipation.
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