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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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5GH8 vacuum tube outline illustration

Tube-number record

5GH8

0 archive entries

5GH8 is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand TUNG-SOL, year 1960, construction Multi-section, base Small Button 9-Pin, socket Noval (B9A), maximum plate voltage 350 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassTriode-Pentode
BaseNoval (B9A)
Filament4.7 V @ 0.6 mA

Construction

Primary TypeMulti-section
EnvelopeGlass
Base MaterialSmall Button 9-Pin
Sections2

Filament / Heater

MaterialCoated Unipotential
Warm-up Time11s

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode Section125 V7500200000—12 mA
Triode Section125 V850054004613.5 mA

Application Notes

Pentode section intended primarily for service as an oscillator in horizontal deflection systems of television receivers.

Filters

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Manufacturers

Brands

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    Heater Notes
    AC or DC

    Absolute Maximum Ratings

    Plate Voltage350 V
    Plate Dissipation2.5 W
    Grid 2 Voltage430 V
    Cathode Current20 mA
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Sharp-cutoff pentode
    • Medium-mu triode
    • Separate cathodes
    • Electrically independent sections