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

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DL 72 vacuum tube outline illustration

Tube-number record

DL 72

0 archive entries

DL 72 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand PHILIPS, construction Pentode, socket Flexible / flying leads, maximum plate voltage 45 V, and maximum plate dissipation 0.06 W. The archive does not yet hold a photographed example of this type.

BrandPHILIPS
ClassOutput Pentode
BaseFlexible / flying leads

Construction

Primary TypePentode
EnvelopeSubminiature
SectionsSingle

Filament / Heater

MaterialDirect DC

Absolute Maximum Ratings

Plate Voltage45 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A45 V50025000061.25 mA

Datasheets

Datasheet: DL72.pdf

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

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    Plate Dissipation
    0.06 W
    Grid 2 Voltage45 V
    Grid 1 Voltage-0.2 V
    Cathode Current2 mA

    Audio Performance

    Typical THD10%
    Power Output0.023 W
    Key Features
    • Hearing aid output stage
    • Series or parallel filament supply
    • Direct heating
    • Subminiature design