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

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Tube-number record

4B28

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BrandGeneral Electric Co.
ClassGas Filled Rectifier
BaseScrew / Edison base

Construction

Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Plate Voltage300 V
Cathode Current6000 mA

Audio Performance

Key Features
  • Convection cooling
  • Thoriated Tungsten Filament

Datasheets

Datasheet: 4B28.pdf

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

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