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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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3A3A vacuum tube outline illustration

Tube-number record

3A3A

0 archive entries

3A3A is a tube type in the TubeDatabase archive (class: High Tension Rectifier Diode). Recorded specifications: brand MAZDA BELVU, construction Diode, base Plastic (Octal), socket Octal, and maximum plate voltage 30000 V. The archive does not yet hold a photographed example of this type.

BrandMAZDA BELVU
ClassHigh Tension Rectifier Diode
BaseOctal
Filament3.15 V @ 220 mA

Construction

Primary TypeDiode
Rectifier TypeHalf-wave
EnvelopeT 9-33
Base MaterialPlastic (Octal)
Sections1

Filament / Heater

Heater NotesIndirect heating

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Rectifier100 V———7 mA

Application Notes

Designed for T.H.T. power supply in 90 degree color cathode-ray tubes. Pins 1, 3, 5, and 8 must be connected to pin 7 directly or via an anti-corona ring.

Filters

0 tubes found

Manufacturers

Brands

    0 results

    Absolute Maximum Ratings

    Plate Voltage30000 V
    Cathode Current2 mA

    Audio Performance

    Key Features
    • Indirectly heated cathode
    • X-ray emission warning above 18 kV
    • Anti-corona ring requirement