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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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12R5 vacuum tube outline illustration

Tube-number record

12R5

0 archive entries

12R5 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand General Electric, year 1957, construction Beam tetrode / beam power, base Glass, socket Miniature 7-pin (B7G), maximum plate voltage 150 V, and maximum plate dissipation 4.5 W. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassPentode
BaseMiniature 7-pin (B7G)
Filament12.6 V @ 600 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeT-5 1/2
Base MaterialGlass
Sections1

Filament / Heater

Heater NotesControlled heater warm-up characteristic for series-connected heaters.

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Vertical-Deflection Amplifier Characteristic 145 V———120 mA
Vertical-Deflection Amplifier Characteristic 2110 V700013000—40 mA

Application Notes

Primarily designed for use as a pentode-connected vertical-deflection amplifier in television receivers.

Filters

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Manufacturers

Brands

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    Plate Voltage150 V
    Plate Dissipation4.5 W
    Grid 2 Voltage150 V
    Grid 1 Voltage-150 V
    Cathode Current45 mA
    H-C Voltage300 V

    Audio Performance

    Key Features
    • Controlled heater warm-up
    • High zero-bias plate current
    • Miniature beam pentode