Tube-number record
UH50
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UH50 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand Eimac, construction Triode, maximum plate voltage 1250 V, and maximum plate dissipation 50 W. The archive does not yet hold a photographed example of this type.
BrandEimac
ClassTriode
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1250 V
Plate Dissipation50 W
Cathode Current125 mA
Audio Performance
Key Features
- Radiation cooled
- Ultra high frequency
- Tantalum elements
- Thoriated tungsten filament
- No getter required
- Directly interchangeable with certain conventional tubes
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 1000 V | — | — | — | 125 mA |
| Class C Telegraphy | 1250 V | — | — | — | 125 mA |
| Class C Telephony | 750 V | — | — | — | 115 mA |
| Class C Telephony | 1000 V | — | — | — | 125 mA |
| Class C Telephony | 1250 V | — | — | — | 125 mA |
Application Notes
Tube must be operated vertically with ample ventilation provided. Seals must be cooled by Radiator Connectors. Plate is designed to operate at a cherry-red color on its normal dissipation rating of 50 watts. A perceptible red color is noted at 25 watts.
Datasheets
Datasheet: UH50.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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