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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

SR 4

0 archive entries

ClassVoltage Reference Tube
BaseFlexible / flying leads

Construction

Primary TypeDiode
EnvelopeSubminiature
Base MaterialGlass
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage110 V
Cathode Current5 mA

Audio Performance

Key Features
  • Cold molybdenum cathode
  • Subminiature size
  • Light-independent breakdown voltage
  • Long life

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Stabilizing85 V—200—1.5 mA

Application Notes

Voltage reference tube. Coupling element in DC-amplifiers.

Datasheets

Datasheet: SR4.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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