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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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4B27 vacuum tube outline illustration

Tube-number record

4B27

0 archive entries

4B27 is a tube type in the TubeDatabase archive (class: Full-Wave Gas-Filled Rectifier). Recorded specifications: brand General Electric Co., construction Other / special, base Plastic/Metal, socket 4-pin, and maximum plate voltage 1000 V. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric Co.
ClassFull-Wave Gas-Filled Rectifier
Base4-pin

Construction

Primary TypeOther / special
Rectifier TypeFull-Wave
EnvelopeGlass
Base MaterialPlastic/Metal
Sections2

Filament / Heater

MaterialMercury-Vapor

Application Notes

Requires a 5-minute time delay for filament warmup before applying anode voltage.

Datasheets

Datasheet: 4B27.pdf

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

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    Warm-up Time
    300s

    Absolute Maximum Ratings

    Plate Voltage1000 V
    Cathode Current2000 mA

    Audio Performance

    Key Features
    • Full-Wave
    • Gas-Filled
    • High Power Rectifier
    • Convection Cooled