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

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6FX4 vacuum tube outline illustration

Tube-number record

6FX4

0 archive entries

6FX4 is a tube type in the TubeDatabase archive (class: Full-wave Rectifier). Recorded specifications: brand F.I.V.R.E. (Fabbrica Italiana Valvole Radio Elettriche), construction Diode, and socket Miniature 7-pin (B7G). The archive does not yet hold a photographed example of this type.

BrandF.I.V.R.E. (Fabbrica Italiana Valvole Radio Elettriche)
ClassFull-wave Rectifier
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 0.6 mA

Construction

Primary TypeDiode
Rectifier Typefull-wave
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Capacitive Input Filter350 V———90 mA
Inductive Input Filter450 V———90 mA

Application Notes

Commonly used as a full-wave rectifier in radio equipment with inductive or capacitive filters.

Datasheets

Datasheet: 6FX4.pdf

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

Filters

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Manufacturers

Brands

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    Cathode Current90 mA
    H-C Voltage500 V

    Audio Performance

    Key Features
    • Miniature construction
    • Full-wave rectification
    • Indirect heating