HY51A
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BrandHytron
ClassPower Triode
Base4-Pin UX
Construction
Primary TypeTriode
EnvelopeST-19
Base MaterialIso.
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation65 W
Grid 1 Voltage-200 V
Cathode Current155 mA
Audio Performance
Power Output180 W
Key Features
- High Efficiency
- Rugged construction
- High transconductance
- Low driving power
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B Modulator (per tube) | 1000V | 6500 | - | 25 | 150mA |
| Class C Telegraphy | 1000V | 6500 | - | - | 140mA |
| Class C Telephony (Plate Modulated) | 800V | - | - | - | 100mA |
Application Notes
Internal structure permits operation at maximum rating at frequencies up to 60 megacycles.
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