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

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12K4 vacuum tube outline illustration

Tube-number record

12K4

0 archive entries

12K4 is a tube type in the TubeDatabase archive (class: High-frequency pentode). Recorded specifications: construction Pentode, base Metal, socket Octal, maximum plate voltage 330 V, and maximum plate dissipation 3.3 W. The archive does not yet hold a photographed example of this type.

ClassHigh-frequency pentode
BaseOctal
Filament12.6 V @ 150 mA

Construction

Primary TypePentode
EnvelopeMetal
Base MaterialMetal
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated oxide-coated cathode

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
High-frequency amplification250 V4700——7.8 mA

Application Notes

Designed for amplification of high-frequency voltage. Resistant to mechanical vibration up to 6g and ambient temperatures from -60 to +70°C.

Datasheets

Datasheet: 12K4.pdf

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

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    Plate Voltage330 V
    Plate Dissipation3.3 W
    Grid 2 Voltage220 V
    H-C Voltage100 V

    Audio Performance

    Key Features
    • Tailed characteristic curve
    • Remote cut-off
    • Metal envelope
    • Octal base