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

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34GD5A vacuum tube outline illustration

Tube-number record

34GD5A

0 archive entries

34GD5A is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand Sylvania, construction Beam tetrode / beam power, maximum plate voltage 150 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassPower Pentode
Filament34 V @ 100 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeMiniature

Filament / Heater

Warm-up Time20s
Heater NotesSeries Operation

Absolute Maximum Ratings

Plate Voltage150 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier——13000——

Application Notes

The Sylvania Type 34GD5A is a miniature beam power pentode designed for service as an audio output amplifier. It features high efficiency at relatively low plate and Grid No. 2 voltages.

Datasheets

Datasheet: 34GD5A.pdf

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

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    Plate Dissipation5 W
    Grid 2 Voltage130 V
    H-C Voltage200 V

    Audio Performance

    Typical THD10%
    Power Output1.4 W
    Key Features
    • High efficiency
    • Controlled heater warm-up time
    • Designed for AC/DC radio receivers