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

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6AJ8 vacuum tube outline illustration

Tube-number record

6AJ8

0 archive entries

6AJ8 is a tube type in the TubeDatabase archive (class: Triode-Heptode). Recorded specifications: brand Philips, construction Multi-section, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 1.7 W. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassTriode-Heptode
BaseNoval (B9A)
Filament6.3 V @ 300 mA

Construction

Primary TypeMulti-section
EnvelopeGlass
SectionsTriode, Heptode

Filament / Heater

MaterialCoated unipotential
Heater NotesIndirectly heated

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Heptode section as mixer250 V1751000000—3.25 mA
Heptode section as HF/IF amplifier250 V2400700000206.5 mA
Triode section typical100 V3700—2213.5 mA

Application Notes

The 6AJ8 as frequency changer can be used in combination with 6BY7 or 6N8 as I.F. amplifier.

Datasheets

Datasheet: 6AJ8.pdf

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

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Manufacturers

Brands

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    Plate Voltage300 V
    Plate Dissipation1.7 W
    Grid 2 Voltage125 V
    Grid 1 Voltage-1.3 V
    Cathode Current12.5 mA
    H-C Voltage100 V

    Audio Performance

    Key Features
    • Triode-Heptode for FM and TV receivers
    • Internal shield on pin 3
    Triode section as oscillator250 V550——4.5 mA