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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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6AU7 vacuum tube outline illustration

Tube-number record

6AU7

0 archive entries

6AU7 is a tube type in the TubeDatabase archive (class: TWIN TRIODE). Recorded specifications: brand TUNG-SOL, year 1960, construction Dual triode, base Button, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 2.75 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassTWIN TRIODE
BaseNoval (B9A)
Filament6.3 V @ 0.3 mA

Construction

Primary TypeDual triode
EnvelopeGlass
Base MaterialButton
Sections2

Filament / Heater

Heater NotesSeries or Parallel operation. Warm-up time defined as time for heater voltage to reach 80% of rated voltage.

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier100 V310065002011.8 mA
Class A1 Amplifier250 V220077001710.5 mA

Application Notes

Intended for vertical deflection amplifiers and horizontal deflection oscillators in television receivers. Identical to 12AU7 except for heater ratings and warm-up time.

Filters

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Manufacturers

Brands

    0 results
    Plate Voltage300 V
    Plate Dissipation2.75 W
    Grid 1 Voltage-600 V
    Cathode Current20 mA
    H-C Voltage200 V

    Audio Performance

    Typical THD5%
    Key Features
    • Medium-mu twin triode
    • 9-pin miniature construction
    • 600 mA series string TV applications
    • Unipotential Cathode