SR 54
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ClassVoltage Reference Tube
Base7-pin Miniature
Construction
Primary TypeCold Cathode Gas-filled
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 | 350V | - | 100000 | - | 2.5mA |
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.
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