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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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7Z4 vacuum tube outline illustration

Tube-number record

7Z4

0 archive entries

7Z4 is a tube type in the TubeDatabase archive (class: Full-wave Rectifier). Recorded specifications: brand Brimar, construction Rectifier, socket Loctal, and maximum plate voltage 1250 V. The archive does not yet hold a photographed example of this type.

BrandBrimar
ClassFull-wave Rectifier
BaseLoctal
Filament6.3 V @ 0.9 mA

Construction

Primary TypeRectifier
Rectifier Typeindirectly heated
EnvelopeGlass
Sectionsdouble diode

Filament / Heater

Absolute Maximum Ratings

Plate Voltage1250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Condenser Input325 V———100 mA

Datasheets

Datasheet: 7Z4.pdf

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

Filters

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Manufacturers

Brands

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    Cathode Current300 mA
    H-C Voltage450 V

    Audio Performance

    Key Features
    • Indirectly heated
    • Full-wave
    • A.C. and car radio equipment use