Tube-number record
12SX7GT
0 archive entries
12SX7GT is a tube type in the TubeDatabase archive (class: Twin Triode). Recorded specifications: brand TUNG-SOL, year 1946, construction Triode, base Short Intermediate Shell, socket Octal, maximum plate voltage 300 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassTwin Triode
BaseOctal
Filament12.6 V @ 0.3 mA
Construction
Primary TypeTriode
EnvelopeT-9 Glass
Base MaterialShort Intermediate Shell
Sections2
Filament / Heater
Heater NotesAC or DC, designed for 12-cell storage battery operation
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 26.5 V | 1800 | 11500 | 21 | 1.8 mA |
| Class A1 Amplifier | 90 V | 3000 | 6700 | 20 | 10 mA |
| Class A1 Amplifier | 250 V | 2600 | 7700 | 20 | 9 mA |
Application Notes
Designed especially for use in equipment where operating voltages are obtained from a 12 cell storage battery with a design-center of 26.5 volts. Useful as audio amplifier, oscillator, converter and multi-vibrator.
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