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Tube Database (7,341 tube types · 1,270 archive entries)

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TY 12-20A vacuum tube outline illustration

Tube-number record

TY 12-20A

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TY 12-20A is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand Mullard, construction Triode, socket Special / none, maximum plate voltage 13000 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.

BrandMullard
ClassTriode
BaseSpecial / none

Construction

Primary TypeTriode
EnvelopeExternal anode, forced air-cooled
SectionsSingle

Filament / Heater

MaterialThoriated tungsten

Absolute Maximum Ratings

Plate Voltage13000 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class C Oscillator12000 V30000—214500 mA

Application Notes

The filament current must never exceed a surge value of 280A at any time during the warming up period. Mounting position must be vertical with anode down.

Datasheets

Datasheet: TY12-20A.pdf

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

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    Plate Dissipation20000 W
    Grid 1 Voltage-2000 V
    Cathode Current5000 mA

    Audio Performance

    Power Output39000 W
    Key Features
    • Forced air-cooled
    • External anode
    • Thoriated tungsten filament
    • Industrial RF heating application