12K8GT
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BrandTUNG-SOL
ClassTriode Hexode Converter
Base8-pin Octal
Filament12.6V @ 0.15mA
Construction
Primary TypeTriode Hexode
EnvelopeGlass
Base MaterialMetal Shell
SectionsTwo
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation0.75 W
Grid 2 Voltage150 V
Cathode Current16 mA
Audio Performance
Key Features
- Reduced interaction between oscillator and mixer
- Stable operation on high frequencies
- Broadband band performance
- Uni-potential cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Converter Service (100V) | 100V | 325 | 400000 | - | 2.3mA |
| Converter Service (250V) | 250V | 350 | 600000 | - | 2.5mA |
Application Notes
Used in AC-DC superheterodynes using 150 mA heater tubes.
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