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

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RD27AS vacuum tube outline illustration

Tube-number record

RD27AS

0 archive entries

RD27AS is a tube type in the TubeDatabase archive (class: Transmitting triode). Recorded specifications: brand Tesla, construction Triode, socket 4-pin, maximum plate voltage 600 V, and maximum plate dissipation 27 W. The archive does not yet hold a photographed example of this type.

BrandTesla
ClassTransmitting triode
Base4-pin

Construction

Primary TypeTriode
Envelopeglass
Sections1

Filament / Heater

Materialoxide-coated

Absolute Maximum Ratings

Plate Voltage600 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
characteristic data600 V750012659.545 mA

Datasheets

Datasheet: RD27AS.pdf

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

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    Plate Dissipation
    27 W
    Cathode Current175 mA

    Audio Performance

    Key Features
    • Directly heated cathode
    • Class C power amplifier
    • Oscillator
    • AF power amplifier