TubeDatabase
  • Tubes
  • Testers
  • Companies
  • Submit
  • About

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)
DisclaimerA–Z indexSubmit a tube
12CT8 vacuum tube outline illustration

Tube-number record

12CT8

0 archive entries

12CT8 is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand General Electric, construction Other / special, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 2.75 W. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassTriode-Pentode
BaseNoval (B9A)
Filament12.6 V @ 300 mA

Construction

Primary TypeOther / special
EnvelopeT-6 1/4
SectionsTriode, Pentode

Filament / Heater

Warm-up Time11s
Heater NotesControlled heater warm-up characteristic for series-string operation.

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode Section200 V7000150000—15 mA
Triode Section150 V49008200409 mA

Application Notes

Pentode section designed for video amplifier service; triode section for sync amplifier, separator, clipper, or sweep oscillator.

Datasheets

Datasheet: 12CT8.pdf

Download PDF
Loading datasheet...

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

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Plate Voltage300 V
    Plate Dissipation2.75 W
    Grid 2 Voltage300 V
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Controlled heater warm-up
    • Miniature construction
    • Designed for low d-c supply voltages