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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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25A6G vacuum tube outline illustration

Tube-number record

25A6G

0 archive entries

25A6G is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand Brimar, construction Pentode, socket Octal, maximum plate voltage 160 V, and maximum plate dissipation 5.3 W. The archive does not yet hold a photographed example of this type.

BrandBrimar
ClassPower Pentode
BaseOctal
Filament25 V @ 300 mA

Construction

Primary TypePentode
EnvelopeG
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage160 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A95 V200045000—20 mA
Class A135 V245035000—37 mA
Class A160 V240042000—33 mA

Datasheets

Datasheet: 25A6G.pdf

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

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    Plate Dissipation5.3 W
    Grid 2 Voltage135 V

    Audio Performance

    Key Features
    • Indirectly heated
    • Power Pentode
    • For use in A.C./D.C. equipment
    • Low operating voltages