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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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SV6550C vacuum tube outline illustration

Tube-number record

SV6550C

0 archive entries

SV6550C is a tube type in the TubeDatabase archive (class: Beam Power Pentode). Recorded specifications: brand Svetlana, year 1998, construction Beam tetrode / beam power, base Metal sleeve with large wafer octal 8-pin, socket Octal, maximum plate voltage 680 V, and maximum plate dissipation 35 W. The archive does not yet hold a photographed example of this type.

BrandSvetlana
ClassBeam Power Pentode
BaseOctal
Filament6.3 V @ 1.6 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeGlass
Base MaterialMetal sleeve with large wafer octal 8-pin
Sections1

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 (single tube)400 V9500——87 mA

Application Notes

Intended for ultra linear audio frequency power amplification service. Manufactured in St. Petersburg, Russia. Direct replacement for any 6550.

Filters

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Manufacturers

Brands

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    Plate Voltage680 V
    Plate Dissipation35 W
    Grid 2 Voltage400 V
    Grid 1 Voltage-300 V
    Cathode Current175 mA
    H-C Voltage300 V

    Audio Performance

    Typical THD5%
    Power Output12 W
    Key Features
    • Increased peak cathode emission
    • Gold-plated grid
    • Tri-plate anode
    • Single-piece beam forming electrode
    • Precise grid/screen alignment
    • Improved vacuum processing