SR 45
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ClassVoltage Reference Tube
BaseSubminiature soldering connections
Construction
Primary TypeCold molybdenum cathode
EnvelopeSubminiature
Base MaterialGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage140 V
Cathode Current5 mA
Audio Performance
Key Features
- Cold molybdenum cathode
- Tritium pre-ionization
- Subminiature size
- Soldering connections
- Breakdown voltage not influenced by light
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Stabilizing | 105V | - | - | - | 2.5mA |
| Typical Operation (UB Supply) | 200V | - | 15000 | - | 3.5mA |
Application Notes
Breakdown voltage is independent of illumination, remains unchanged in complete darkness.
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