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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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6B8GT vacuum tube outline illustration

Tube-number record

6B8GT

0 archive entries

6B8GT is a tube type in the TubeDatabase archive (class: Duo-Diode Pentode Amplifier). Recorded specifications: brand TUNG-SOL, year 1945, construction Pentode, socket Octal, maximum plate voltage 300 V, and maximum plate dissipation 3 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassDuo-Diode Pentode Amplifier
BaseOctal
Filament6.3 V @ 0.3 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsTriple (Two Diodes, One Pentode)

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage300 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier (Pentode Unit)250 V1325600000—10 mA

Application Notes

Designed for service as a combined detector, AVC rectifier and a pentode amplifier.

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Manufacturers

Brands

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    Plate Dissipation3 W
    Grid 2 Voltage300 V

    Audio Performance

    Key Features
    • Coated Unipotential Cathode
    • Miniature Cap
    • Common Cathode for all units