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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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6AS7 vacuum tube outline illustration

Tube-number record

6AS7

0 archive entries

6AS7 is a tube type in the TubeDatabase archive (class: Dual Power Triode). Recorded specifications: brand Svetlana, year 1996, construction Dual triode, socket Octal, maximum plate voltage 250 V, and maximum plate dissipation 13 W. The archive does not yet hold a photographed example of this type.

BrandSvetlana
ClassDual Power Triode
BaseOctal
Filament6.3 V @ 2500 mA

Construction

Primary TypeDual triode
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesMin: 5.7V, Max: 6.9V. May be DC operated for best hum performance.

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Push-Pull (Two Triodes)250 V5500280—80 mA

Application Notes

Originally designed as a series pass tube in regulated power supplies. Excellent choice for OTL (Output Transformerless) and high-performance audio circuits.

Filters

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Manufacturers

Brands

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    Plate Dissipation13 W
    Grid 1 Voltage-150 V
    Cathode Current130 mA
    H-C Voltage300 V

    Audio Performance

    Power Output10 W
    Key Features
    • Indirectly-heated unipotential cathode
    • High transconductance
    • Low plate resistance
    • High plate current capacity