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

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Tube-number record

40 S.U.A.

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BrandCOSSOR
ClassRectifier
Filament40 V @ 200 mA

Construction

Primary TypeIndirectly heated
Rectifier TypeHalf-wave

Filament / Heater

Absolute Maximum Ratings

Plate Voltage250 V
Cathode Current75 mA

Audio Performance

Key Features
  • Indirectly heated
  • Half-wave
  • For A.C./D.C. receivers
  • Series running

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Half-wave rectification250 V———75 mA

Application Notes

Designed for series running with Cossor 13-volt 0.2 amp series of valves. Suitable for doing away with mains transformers in A.C. only sets.

Datasheets

Datasheet: 40SUA.pdf

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

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