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

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ECF801 vacuum tube outline illustration

Tube-number record

ECF801

0 archive entries

ECF801 is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand Philips, construction Pentode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 2 W. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 0.41 mA

Construction

Primary TypePentode
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesIndirect heating by A.C. or D.C.; parallel supply

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode section170 V110003500005510 mA
Triode section100 V9000—2015 mA

Application Notes

Specifically designed for use as a frequency changer in V.H.F. television tuners. Heater to cathode voltage should not exceed 100V RMS to fulfill modulation hum requirements.

Datasheets

Datasheet: ECF801.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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    Plate Dissipation2 W
    Grid 2 Voltage250 V
    Grid 1 Voltage50 V
    Cathode Current18 mA
    H-C Voltage100 V

    Audio Performance

    Key Features
    • Frame Grid
    • High slope
    • Frequency changer
    • V.H.F. television tuners