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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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6HF8 vacuum tube outline illustration

Tube-number record

6HF8

0 archive entries

6HF8 is a tube type in the TubeDatabase archive (class: Triode Pentode). Recorded specifications: brand TUNG-SOL, year 1962, construction Multi-section, base Small-button Noval, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassTriode Pentode
BaseNoval (B9A)
Filament6.3 V @ 0.75 mA

Construction

Primary TypeMulti-section
EnvelopeGlass
Base MaterialSmall-button Noval
Sections2

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Triode Section200 V400017500704 mA
Pentode Section200 V1250075000—25 mA
Pentode Section (Low Voltage)45 V———40 mA

Application Notes

Intended for use in color and black-and-white television receivers. Pentode unit is especially useful as a video output amplifier; triode unit is useful in voltage-amplifier applications such as sync-separator, sync-clipper and phase-inverter circuits.

Filters

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Manufacturers

Brands

    0 results
    Plate Voltage330 V
    Plate Dissipation5 W
    Grid 2 Voltage330 V
    H-C Voltage200 V

    Audio Performance

    Key Features
    • High-mu triode
    • Sharp-cutoff pentode
    • Unipotential cathode
    • Miniature construction