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

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DAF 41 vacuum tube outline illustration

Tube-number record

DAF 41

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DAF 41 is a tube type in the TubeDatabase archive (class: Diode-Pentode). Recorded specifications: brand Philips, construction Pentode, socket Rimlock, maximum plate voltage 135 V, and maximum plate dissipation 0.1 W. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassDiode-Pentode
BaseRimlock

Construction

Primary TypePentode
EnvelopeGlass
SectionsDiode-Pentode

Filament / Heater

MaterialDirectly heated

Absolute Maximum Ratings

Plate Voltage135 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Resistance coupled A.F. amplifier67.5 V——600.17 mA
Resistance coupled A.F. amplifier90 V——700.25 mA
Resistance coupled A.F. amplifier90 V——83

Application Notes

Used in battery receivers. Input voltage Vi >= 18 mV for an output of 50 mW without special microphonic precautions.

Datasheets

Datasheet: DAF41.pdf

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

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    Plate Dissipation0.1 W
    Grid 2 Voltage85 V
    Grid 1 Voltage-0.2 V
    Cathode Current0.5 mA

    Audio Performance

    Key Features
    • Direct heating
    • Series or parallel supply
    • Microphonic resistant
    0.13 mA
    Resistance coupled A.F. amplifier120 V——1000.18 mA
    Resistance coupled A.F. amplifier150 V——1120.24 mA