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

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20LF6 vacuum tube outline illustration

Tube-number record

20LF6

0 archive entries

20LF6 is a tube type in the TubeDatabase archive (class: Beam Power Pentode). Recorded specifications: brand General Electric, construction Beam tetrode / beam power, base Glass, socket Compactron, maximum plate voltage 990 V, and maximum plate dissipation 40 W. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassBeam Power Pentode
BaseCompactron
Filament20 V @ 600 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeT-12
Base MaterialGlass
SectionsSingle

Filament / Heater

Heater NotesA.C. or D.C. parallel supply

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Horizontal-Deflection Amplifier160 V———1400 mA
Horizontal-Deflection Amplifier50 V———800 mA

Datasheets

Datasheet: 20LF6.pdf

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

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Manufacturers

Brands

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    Plate Voltage990 V
    Plate Dissipation40 W
    Grid 2 Voltage275 V
    Grid 1 Voltage-550 V
    Cathode Current500 mA
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Beam power pentode
    • Designed for horizontal deflection circuits in color television receivers