Tube-number record
SR 54
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SR 54 is a tube type in the TubeDatabase archive (class: Voltage Reference Tube). Recorded specifications: construction Other / special, socket Miniature 7-pin (B7G), and maximum plate voltage 115 V. The archive does not yet hold a photographed example of this type.
ClassVoltage Reference Tube
BaseMiniature 7-pin (B7G)
Construction
Primary TypeOther / special
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage115 V
Cathode Current3.5 mA
Audio Performance
Key Features
- Molybdenum cathode
- High stability
- Freedom of flickering
- Extremely long life
- Light-independent breakdown voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Reference Operation | 350 V | — | 100000 | — | 2.5 mA |
Application Notes
The tube is often used as the last stage of a cascade stabilization circuit. Breakdown voltage remains unchanged even in total darkness. Mounting in any position.
Datasheets
Datasheet: SR54.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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