Tube-number record
6FX7
0 archive entries
6FX7 is a tube type in the TubeDatabase archive (class: Medium-mu twin triode). Recorded specifications: brand Toshiba, construction Dual triode, base Glass, socket Subminiature, maximum plate voltage 100 V, and maximum plate dissipation 1.7 W. The archive does not yet hold a photographed example of this type.
BrandToshiba
ClassMedium-mu twin triode
BaseSubminiature
Filament6.3 V @ 300 mA
Construction
Primary TypeDual triode
EnvelopeT3
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesUnipotential cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier (each section) | 90 V | 9500 | 3800 | 36 | 9 mA |
| Cascode Amplifier | 165 V | 13000 | — | — | 16.5 mA |
Application Notes
Designed for use as a cascode amplifier in high gain tuners for television receivers.
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