Tube-number record
6FC7
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BrandTung-Sol
ClassDouble Triode
BaseNoval (B9A)
Filament6.3 V @ 340 mA
Construction
Primary TypeDual triode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesCharacteristics section lists 6.4V
Absolute Maximum Ratings
Plate Voltage130 V
Plate Dissipation1.8 W
Grid 1 Voltage50 V
Cathode Current22 mA
H-C Voltage180 V
Audio Performance
Key Features
- Frame Grid
- Double Triode
- Cascode Amplifier
- 9-Pin Miniature
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. Recommended that pins 7 and 8 be strapped.
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