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

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1B40 vacuum tube outline illustration

Tube-number record

1B40

0 archive entries

1B40 is a tube type in the TubeDatabase archive (class: Gas Switching Tube). Recorded specifications: brand Sylvania, construction Other / special, socket Special / none, and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassGas Switching Tube
BaseSpecial / none

Construction

Primary TypeOther / special
EnvelopeGlass
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage250 V

Audio Performance

Application Notes

The 1B40 is an argon filled gas switching tube of the separate cavity type. Note: This tube is obsolete and manufacturing facilities are no longer available.

Datasheets

Datasheet: 1B40.pdf

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

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    Key Features
    • Argon filled
    • Separate cavity type
    • Any mounting position