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

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EF 43 vacuum tube outline illustration

Tube-number record

EF 43

0 archive entries

EF 43 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Philips, construction Pentode, socket Rimlock, maximum plate voltage 300 V, and maximum plate dissipation 3.75 W. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassPentode
BaseRimlock
Filament6.3 V @ 330 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesIndirect heating; parallel supply

Absolute Maximum Ratings

Plate Voltage300 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
R.F. or I.F. amplifier250 V6400500000—15 mA

Application Notes

R.F. pentode with variable mutual conductance for use as wide-band amplifier.

Datasheets

Datasheet: EF43.pdf

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

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Manufacturers

Brands

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    Plate Dissipation3.75 W
    Grid 2 Voltage250 V
    Grid 1 Voltage-1.3 V
    Cathode Current20 mA
    H-C Voltage100 V

    Audio Performance

    Key Features
    • Variable mutual conductance
    • Wide-band amplifier
    • Rimlock base