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

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7642 vacuum tube outline illustration

Tube-number record

7642

0 archive entries

7642 is a tube type in the TubeDatabase archive (class: Travelling Wave Tube). Recorded specifications: brand The M-O Valve Co. Ltd., construction Travelling Wave Tube, socket Flexible / flying leads, and maximum plate voltage 600 V. The archive does not yet hold a photographed example of this type.

BrandThe M-O Valve Co. Ltd.
ClassTravelling Wave Tube
BaseFlexible / flying leads
Filament6.3 V @ 1300 mA

Construction

Primary TypeTravelling Wave Tube
EnvelopePackaged with PPM system
SectionsSingle

Filament / Heater

Heater NotesHeater current max is 1370 mA

Absolute Maximum Ratings

Plate Voltage600 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Intermediate Power Amplifier500 V———6 mA

Application Notes

The tube is an intermediate power amplifier for telecommunication systems. The collector is normally earthed in practice.

Datasheets

Datasheet: 7642.pdf

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

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Manufacturers

Brands

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    Grid 2 Voltage480 V
    Grid 1 Voltage20 V
    Cathode Current7 mA

    Audio Performance

    Key Features
    • Extremely flat r.f. gain
    • Periodic permanent magnet system
    • Convection cooled
    • Coaxial Type N couplers