Tube-number record
12SN7GTA
0 archive entries
12SN7GTA is a tube type in the TubeDatabase archive (class: Medium-Mu Double Triode). Recorded specifications: brand Tung-Sol, year 1954, construction Dual triode, base Intermediate Shell Octal, socket Octal, maximum plate voltage 450 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassMedium-Mu Double Triode
BaseOctal
Filament12.6 V @ 300 mA
Construction
Primary TypeDual triode
EnvelopeT-9
Base MaterialIntermediate Shell Octal
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier (Unit 1) | 90 V | 3000 | 6700 | 20 | 10 mA |
| Class A1 Amplifier (Unit 2) | 250 V | 2600 | 7700 | 20 | 9 mA |
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