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

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6GJ8 vacuum tube outline illustration

Tube-number record

6GJ8

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6GJ8 is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand Sylvania, construction Multi-section, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 600 mA

Construction

Primary TypeMulti-section
EnvelopeMiniature
Sections2

Filament / Heater

Absolute Maximum Ratings

Plate Voltage330 V
Plate Dissipation2.5 W

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Triode Section125 V850050004013.5 mA
Class A1 Pentode Section125 V7500150000—12 mA

Application Notes

The pentode section is intended primarily for service as an oscillator in the horizontal deflection system of television receivers.

Datasheets

Datasheet: 6GJ8.pdf

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

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    Grid 2 Voltage330 V
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Controlled heater warm-up time
    • Sharp cutoff pentode
    • Medium mu triode
    • Designed for series string operation