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

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2L35 vacuum tube outline illustration

Tube-number record

2L35

0 archive entries

2L35 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand TESLA, construction Pentode, base Glass, socket Miniature 7-pin (B7G), maximum plate voltage 150 V, and maximum plate dissipation 2 W. The archive does not yet hold a photographed example of this type.

BrandTESLA
ClassPentode
BaseMiniature 7-pin (B7G)

Construction

Primary TypePentode
EnvelopeGlass
Base MaterialGlass
Sections1

Filament / Heater

MaterialOxide

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Audio150 V210050000—14.2 mA
Class C RF (10 Mc/s)150 V———18.5 mA

Application Notes

Can replace 3L35, 3L31, 2L33, 3A4, DL93, DL193 with minor modifications. Negative pole of filament connected to pin -f in series mode.

Datasheets

Datasheet: 2L35.pdf

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

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    Plate Voltage
    150 V
    Plate Dissipation2 W
    Grid 2 Voltage135 V
    Grid 1 Voltage-30 V
    Cathode Current25 mA

    Audio Performance

    Typical THD10%
    Power Output0.7 W
    Key Features
    • Directly heated pentode
    • Separately connected suppressor grid (g3)
    • Center-tapped filament for series/parallel operation