Tube-number record
7FC7
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BrandTUNG-SOL
ClassDouble Triode
BaseNoval (B9A)
Filament7.2 V @ 300 mA
Construction
Primary TypeDual triode
EnvelopeT-6
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesAny mounting position
Absolute Maximum Ratings
Plate Voltage130 V
Plate Dissipation1.8 W
Grid 1 Voltage-50 V
Cathode Current22 mA
H-C Voltage180 V
Audio Performance
Key Features
- Frame grid construction
- Cascode amplifier
- Low noise
- High frequency operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each Section | 90 V | 12000 | — | — | 15 mA |
Application Notes
Intended for use as a cascode amplifier at frequencies up to 220 Megacycles per second.
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