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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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1AB5 vacuum tube outline illustration

Tube-number record

1AB5

0 archive entries

1AB5 is a tube type in the TubeDatabase archive (class: Voltage Amplifier Pentode). Recorded specifications: brand TUNG-SOL, year 1949, construction Pentode, base Glass, socket Loctal, maximum plate voltage 150 V, and maximum plate dissipation 1 W. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassVoltage Amplifier Pentode
BaseLoctal

Construction

Primary TypePentode
EnvelopeT-9
Base MaterialGlass
SectionsSingle

Filament / Heater

MaterialCoated

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier90 V1100275000—3.5 mA
Class A1 Amplifier150 V1350125000—6.8 mA

Application Notes

Designed for use as a mixer or RF amplifier in circuits requiring higher transconductance than the 1LN5. Grid #1 resistor should be 1 Megohm under conditions of zero-bias.

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Manufacturers

Brands

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    Plate Voltage
    150 V
    Plate Dissipation1 W
    Grid 2 Voltage150 V

    Audio Performance

    Key Features
    • Filamentary type
    • Lock-in construction
    • High transconductance
    • Any mounting position