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

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7A4 vacuum tube outline illustration

Tube-number record

7A4

0 archive entries

7A4 is a tube type in the TubeDatabase archive (class: Medium-Mu Triode). Recorded specifications: brand RCA, construction Triode, socket Lock-In 8 Pin, maximum plate voltage 300 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.

BrandRCA
ClassMedium-Mu Triode
BaseLock-In 8 Pin
Filament6.3 V @ 0.3 mA

Construction

Primary TypeTriode
EnvelopeT-9
SectionsSingle

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage300 V

Application Notes

For other characteristics, refer to Type 6J5

Datasheets

Datasheet: 7A4.pdf

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

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    Plate Dissipation
    2.5 W
    H-C Voltage90 V

    Audio Performance