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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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D3F vacuum tube outline illustration

Tube-number record

D3F

0 archive entries

D3F is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Philips Miniwatt, construction Pentode, socket Special / none, maximum plate voltage 135 V, and maximum plate dissipation 0.3 W. The archive does not yet hold a photographed example of this type.

BrandPhilips Miniwatt
ClassPentode
BaseSpecial / none

Construction

Primary TypePentode
EnvelopeButton
Sections1

Filament / Heater

MaterialDirect

Absolute Maximum Ratings

Plate Voltage135 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Characteristic135 V600800000—1.7 mA

Application Notes

Pentode for ultra short wave apparatus

Filters

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Manufacturers

Brands

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    Plate Dissipation
    0.3 W
    Grid 2 Voltage70 V
    Grid 1 Voltage-0.2 V
    Cathode Current5 mA

    Audio Performance

    Key Features
    • Ultrakurzwellengeräte
    • Knopfröhre
    • Battery operated