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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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25AC5GT/G vacuum tube outline illustration

Tube-number record

25AC5GT/G

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25AC5GT/G is a tube type in the TubeDatabase archive (class: Triode Power Amplifier). Recorded specifications: brand TUNG-SOL, year 1941, construction Triode, base Intermediate 6 Pin Octal Base, socket Octal, maximum plate voltage 180 V, and maximum plate dissipation 10 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassTriode Power Amplifier
BaseOctal
Filament25 V @ 0.3 mA

Construction

Primary TypeTriode
EnvelopeT-9
Base MaterialIntermediate 6 Pin Octal Base
Sections1

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Average Characteristics110 V3800152005845 mA
Dynamic-Coupled Class A1 (Driver 6AE5GT/G)110 V———45 mA
Dynamic-Coupled Class A1 (Driver 6P5GT/G)180 V———

Application Notes

Designed for service with positive grid bias in dynamic coupled circuits employing a type 6AE5GT/G, 6P5GT/G, 76, or 37 as a driver.

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    Plate Voltage180 V
    Plate Dissipation10 W

    Audio Performance

    Typical THD10%
    Power Output2.7 W
    Key Features
    • High-mu power output triode
    • Designed for service with positive grid bias
    • Dynamic coupled circuit compatibility
    27 mA
    Dynamic-Coupled Class A1 (Driver 37)180 V———47 mA