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

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4043-A / 4043-B vacuum tube outline illustration

Tube-number record

4043-A / 4043-B

0 archive entries

4043-A / 4043-B is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand Standard Telephones and Cables, construction Triode, socket 4-pin, maximum plate voltage 600 V, and maximum plate dissipation 35 W. The archive does not yet hold a photographed example of this type.

BrandStandard Telephones and Cables
ClassTriode
Base4-pin

Construction

Primary TypeTriode
EnvelopeGlass
Sections1

Filament / Heater

MaterialOxide coated

Absolute Maximum Ratings

Plate Voltage600 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Constants @ 50mA Anode Current—2285.73500850 mA
Class B A.F. Amp. and Mod. (Zero Signal)600 V———12 mA
Class B A.F. Amp. and Mod. (Max Signal)600 V———

Application Notes

For replacement purposes only. Replaced by 4043-C and 4043-D valves.

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    Plate Dissipation
    35 W
    Cathode Current110 mA

    Audio Performance

    Power Output60 W
    Key Features
    • Oxide coated filament
    • Constant voltage type filament
    • Directly heated cathode
    90 mA
    Class B Telephony (Modulated Carrier)600 V———87 mA
    Class C Telephony (Anode Modulation)400 V———131 mA
    Class C Telegraphy (Unmodulated)600 V———130 mA