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

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DL73 vacuum tube outline illustration

Tube-number record

DL73

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DL73 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Mullard, construction Pentode, socket Subminiature, maximum plate voltage 150 V, and maximum plate dissipation 2 W. The archive does not yet hold a photographed example of this type.

BrandMullard
ClassOutput Pentode
BaseSubminiature

Construction

Primary TypePentode
EnvelopeSubminiature Glass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage150 V
Plate Dissipation2 W

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Characteristics100 V250016000615 mA
Class A Amplifier150 V250010000—13 mA

Application Notes

Continuous life rating is relatively short and is a function of hours of filament operation. Under push-to-talk conditions, an operating life of 200 hours may be expected.

Datasheets

Datasheet: DL73.pdf

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

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    Grid 2 Voltage150 V
    Grid 1 Voltage-70 V
    Cathode Current25 mA

    Audio Performance

    Typical THD10%
    Power Output0.9 W
    Key Features
    • Subminiature
    • V.H.F. Output Pentode
    • Battery-operated
    • Push-to-talk life rating