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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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5842 / 417A vacuum tube outline illustration

Tube-number record

5842 / 417A

0 archive entries

5842 / 417A is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: construction Triode, socket Noval (B9A), maximum plate voltage 200 V, and maximum plate dissipation 4.5 W. The archive does not yet hold a photographed example of this type.

ClassTriode
BaseNoval (B9A)
Filament6.3 V @ 300 mA

Construction

Primary TypeTriode
EnvelopeT 6 1/2
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage200 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1130 V2700016004427 mA
Class A1150 V2500017004325 mA

Application Notes

Operating characteristics of high transconductance tubes are sensitive to variations. The use of a 360 ohm cathode resistor in conjunction with a DC control grid return to a +9.0 volt supply is recommended to stabilize the operating point.

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Plate Dissipation4.5 W
    Grid 1 Voltage-25 V
    Cathode Current38 mA
    H-C Voltage55 V

    Audio Performance

    Key Features
    • Frame grid construction
    • High transconductance
    • Low noise
    • Intermediate frequency application