6FQ7
3 Tubes in archive
BrandEi-RC
ClassA.F. Double Triode
BaseNoval
Filament6.3V @ 600mA
Construction
Primary Typetriode
Envelopeglass
Sectionsdouble
Filament / Heater
Heater NotesIndirect by AC or DC
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation4 W
Grid 1 Voltage-100 V
H-C Voltage200 V
Audio Performance
Key Features
- Indirectly heated
- Double Triode
- Class A amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A amplifier | 90V | 3000 | - | 20 | 10mA |
| Class A amplifier | 250V | 2600 | - | 20 | 9mA |
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