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

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6MD8 vacuum tube outline illustration

Tube-number record

6MD8

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6MD8 is a tube type in the TubeDatabase archive (class: Receiving Tube). Recorded specifications: brand General Electric, construction Triode, base Glass, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 3 W. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassReceiving Tube
BaseNoval (B9A)
Filament6.3 V @ 900 mA

Construction

Primary TypeTriode
EnvelopeT-9
Base MaterialGlass
Sections3

Filament / Heater

Heater NotesHeater current of a bogey tube at Ef = 6.3 volts

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Average Characteristics, Each Section250 V310055001710.5 mA

Application Notes

Intended for use in the matrixing circuits of color television receivers. Can also be used in phase-inverter, multivibrator, and general-purpose amplifier applications.

Datasheets

Datasheet: 6MD8.pdf

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

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Brands

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    Plate Voltage330 V
    Plate Dissipation3 W
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Medium-mu triple triode
    • Chroma matrixing amplifier
    • Low B+ operation
    • T-9 bulb
    • 9-pin glass button base