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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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5AS4A vacuum tube outline illustration

Tube-number record

5AS4A

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5AS4A is a tube type in the TubeDatabase archive (class: Full-Wave Rectifier). Recorded specifications: brand Sylvania, construction Rectifier, base Short Medium Shell, socket Octal, and maximum plate voltage 1550 V. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassFull-Wave Rectifier
BaseOctal

Construction

Primary TypeRectifier
Rectifier TypeFull-Wave
EnvelopeT-12
Base MaterialShort Medium Shell
Sections2

Filament / Heater

MaterialCoated

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Full Wave Rectifier—Capacitor Input Filter300 V—21—300 mA
Full Wave Rectifier—Capacitor Input Filter450 V—67—275 mA
Full Wave Rectifier—Choke Input Filter550 V———

Application Notes

The Sylvania Type 5AS4A is designed for service in the power supply of television receivers or other equipment requiring high current. Horizontal operation is permitted if Pins 1 and 4 are in a vertical plane.

Datasheets

Datasheet: 5AS4A.pdf

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

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    Plate Voltage1550 V

    Audio Performance

    Key Features
    • Filamentary full-wave high vacuum rectifier
    • Designed for TV receivers
    • High current capacity
    275 mA