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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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3D23 vacuum tube outline illustration

Tube-number record

3D23

0 archive entries

3D23 is a tube type in the TubeDatabase archive (class: High Vacuum Tube Multi-Electrode). Recorded specifications: brand Lewis Electronics, construction Tetrode, socket 4-pin, maximum plate voltage 2000 V, and maximum plate dissipation 35 W. The archive does not yet hold a photographed example of this type.

BrandLewis Electronics
ClassHigh Vacuum Tube Multi-Electrode
Base4-pin

Construction

Primary TypeTetrode
EnvelopeGlass
Sections1

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Plate Voltage2000 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class B Radio-Frequency Power Amplifier1500 V2750—6545 mA
Class C Radio-Frequency Power Amplifier and Oscillator, Plate Modulated1000 V———85 mA
Class C Radio-Frequency Power Amplifier and Oscillator, Key Down1500 V——

Datasheets

Datasheet: 3D23.pdf

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

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    Plate Dissipation
    35 W
    Grid 2 Voltage400 V
    Grid 1 Voltage350 V
    Cathode Current125 mA

    Audio Performance

    Key Features
    • Thoriated Tungsten Filament
    • Medium Ceramic Base
    —
    110 mA