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

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EL803 vacuum tube outline illustration

Tube-number record

EL803

0 archive entries

EL803 is a tube type in the TubeDatabase archive (class: Wide-band Power Pentode). Recorded specifications: brand Telefunken, construction Pentode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.

BrandTelefunken
ClassWide-band Power Pentode
BaseNoval (B9A)
Filament6.3 V @ 650 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated, parallel connection

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation 1170 V10500600002236 mA
Typical Operation 2200 V10500600002236 mA

Application Notes

Free pins must not be used as support points for wiring. Special precautions must be taken to prevent the tube from becoming dislodged.

Datasheets

Datasheet: EL803.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 Dissipation9 W
    Grid 2 Voltage250 V
    Cathode Current70 mA
    H-C Voltage120 V

    Audio Performance

    Key Features
    • Wide-band power pentode
    • Indirectly heated
    • Parallel heating