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

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Tube-number record

SR 44

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ClassVoltage Reference Tube
BaseFlexible / flying leads

Construction

Primary TypeOther / special
EnvelopeSubminiature
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage115 V
Cathode Current5 mA

Audio Performance

Key Features
  • Cold molybdenum cathode
  • Low Tritium pre-ionization
  • Subminiature size
  • Soldering connections
  • Light-insensitive breakdown voltage

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Stabilizing84 V———1.5 mA

Application Notes

Breakdown voltage is not influenced by light and remains unchanged even in complete darkness.

Datasheets

Datasheet: SR44.pdf

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

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