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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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5591/403B vacuum tube outline illustration

Tube-number record

5591/403B

0 archive entries

5591/403B is a tube type in the TubeDatabase archive (class: RF Amplifier Pentode). Recorded specifications: construction Pentode, socket Miniature 7-pin (B7G), maximum plate voltage 200 V, and maximum plate dissipation 1.85 W. The archive does not yet hold a photographed example of this type.

ClassRF Amplifier Pentode
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 150 mA

Construction

Primary TypePentode
EnvelopeT 5 1/2
SectionsSingle

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage200 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1130 V5100350000288 mA
Class A1180 V5000500000287.7 mA

Application Notes

The 5591/403B is an excellent longlife replacement for types 5654 and 6AK5.

Filters

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Manufacturers

Brands

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    Plate Dissipation
    1.85 W
    Grid 2 Voltage155 V
    Grid 1 Voltage-50 V
    Cathode Current20 mA
    H-C Voltage100 V

    Audio Performance

    Key Features
    • Longlife replacement
    • Broadband amplifier
    • Low transit time loading