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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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SHARP CUTOFF PENTODE vacuum tube outline illustration

Tube-number record

SHARP CUTOFF PENTODE

0 archive entries

SHARP CUTOFF PENTODE is a tube type in the TubeDatabase archive (class: Computer Tube). Recorded specifications: brand Sylvania, year 1953, construction Pentode, socket Loctal, maximum plate voltage 200 V, and maximum plate dissipation 3.5 W. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassComputer Tube
BaseLoctal
Filament7 V @ 300 mA

Construction

Primary TypePentode
EnvelopeT-9
SectionsSingle

Filament / Heater

Heater Notes7.0V is nominal; 6.3V is actual

Absolute Maximum Ratings

Plate Voltage200 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Condition 1150 V600011500—40 mA
Condition 2 (Cutoff)150 V———2.5 mA
Condition 3 (Suppressor Control)150 V———2 mA

Application Notes

For use as a gating tube, screen dissipation may reach 4.0 watts momentarily.

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Plate Dissipation3.5 W
    Grid 2 Voltage100 V
    Grid 1 Voltage-100 V
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Lock-in base
    • Suppressor control
    • Sharp cutoff
    • Computer service design