12AT7WA
6 Tubes in archive
BrandTung-Sol
ClassPremium Tube
Base9-Pin Miniature
Filament6.3V @ 300mA
Construction
Primary TypeTwin Triode
EnvelopeGlass Bulb
Sections2
Filament / Heater
Heater NotesOperation at 12.6V between pins 4 and 5; 6.3V between pin 9 and pins 4/5 connected together.
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation2.8 W
Grid 1 Voltage-45 V
H-C Voltage100 V
Audio Performance
Key Features
- Ruggedized Twin Triode
- High Transconductance
- Electrically Independent Sections
- Industrial and Military Grade
- Shock and Vibration Resistant
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Per Section) | 100V | 4000 | 15000 | 60 | 3.7mA |
| Class A Amplifier (Per Section) | 250V | 5600 | 10900 | 60 | 10mA |
Application Notes
Especially suited for industrial and military airborne equipment. High ratio of plate current to transconductance makes it adaptable for combined high frequency oscillator and mixer, or grounded grid RF amplifier.
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