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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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12Z3 vacuum tube outline illustration

Tube-number record

12Z3

0 archive entries

12Z3 is a tube type in the TubeDatabase archive (class: Rectifier). Recorded specifications: construction Rectifier, socket 4-pin, and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.

ClassRectifier
Base4-pin
Filament12.6 V @ 300 mA

Construction

Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeST-12
Sections1

Filament / Heater

Heater NotesDesigned for series operation with other 0.3 ampere types.

Absolute Maximum Ratings

Application Notes

The 12Z3 is particularly useful in transformerless receivers of the universal type. A filter of the condenser-input type is recommended, with a large input capacitance in the order of 16 uF desirable.

Datasheets

Datasheet: 12Z3.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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    Plate Voltage250 V
    Cathode Current60 mA
    H-C Voltage350 V

    Audio Performance

    Key Features
    • Heater-cathode type
    • Transformerless receiver design
    • Universal type
    • High-vacuum