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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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25C6GA vacuum tube outline illustration

Tube-number record

25C6GA

0 archive entries

25C6GA is a tube type in the TubeDatabase archive (class: Beam Pentode). Recorded specifications: brand Tung-Sol, year 1956, construction Beam tetrode / beam power, socket Octal, maximum plate voltage 200 V, and maximum plate dissipation 12.5 W. The archive does not yet hold a photographed example of this type.

BrandTung-Sol
ClassBeam Pentode
BaseOctal
Filament25 V @ 0.3 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeGlass Bulb
SectionsSingle

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage200 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier145 V70009400—58 mA
Class A1 Amplifier200 V710018300—61 mA

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    Plate Dissipation12.5 W
    Grid 2 Voltage200 V
    H-C Voltage180 V

    Audio Performance

    Typical THD10%
    Power Output6 W
    Key Features
    • Coated Unipotential Cathode
    • High power sensitivity
    • High power output at comparatively low DC supply voltages
    • Any mounting position