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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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6FH8 vacuum tube outline illustration

Tube-number record

6FH8

0 archive entries

6FH8 is a tube type in the TubeDatabase archive (class: TRIODE TETRODE). Recorded specifications: brand TUNG-SOL, year 1960, construction Tetrode, base Glass Small-Button, socket Noval (B9A), maximum plate voltage 275 V, and maximum plate dissipation 2.3 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassTRIODE TETRODE
BaseNoval (B9A)
Filament6.3 V @ 0.45 mA

Construction

Primary TypeTetrode
EnvelopeT6 1/2 Glass
Base MaterialGlass Small-Button
Sections2

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Triode Unit - Class A1 Amplifier100 V54007400407.9 mA
Tetrode Unit - Class A1 Amplifier250 V4400750000—7.3 mA
Harmonic-Generator Service100 V2500——

Application Notes

The tetrode unit employs three plates specifically for harmonic generation.

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Plate Voltage275 V
    Plate Dissipation2.3 W
    Grid 2 Voltage275 V
    Grid 1 Voltage-40 V

    Audio Performance

    Key Features
    • Medium-mu Triode
    • Sharp cutoff Tetrode
    • Three plates in tetrode unit
    • Designed for harmonic-generator applications
    1.6 mA