6CQ8
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BrandGeneral Electric
ClassTriode-Tetrode
Base9-pin miniature
Filament6.3V @ 450mA
Construction
Primary TypeTriode-Tetrode
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
MaterialCoated Unipotential
Warm-up Time11s
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation3.2 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Sharp-cutoff tetrode
- Medium-mu triode
- Separate cathodes
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Tetrode Section) | 125V | 5800 | 140000 | - | 12mA |
| Class A Amplifier (Triode Section) | 125V | 8000 | 5000 | 40 | 15mA |
Application Notes
The tube is intended primarily for service as a combined triode oscillator and tetrode mixer in television and FM receivers, although it is also suitable for a wide variety of general-purpose applications.
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