Tube-number record
6680/12AU7
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BrandSylvania
ClassMedium-mu Triode
BaseNoval (B9A)
Filament12.6 V @ 150 mA
Construction
Primary TypeTriode
EnvelopeT-6 1/2
SectionsDual
Filament / Heater
Heater NotesSeries or Parallel operation
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation3 W
H-C Voltage200 V
Audio Performance
Key Features
- Designed for mobile communications equipment
- Withstands automotive supply voltage variations
- Capable of high on-off cycling
- Coated unipotential cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 100 V | 3100 | 6500 | 20 | 11.8 mA |
| Class A1 Amplifier | 250 V | 2200 | 7700 | 17 | 10.5 mA |
Application Notes
Specifically designed for use in mobile communications equipment. May be operated without serious degradation under normal variations in supply voltage as encountered with automotive electrical systems.
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