Tube-number record
6FX4
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BrandF.I.V.R.E. (Fabbrica Italiana Valvole Radio Elettriche)
ClassFull-wave Rectifier
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 0.6 mA
Construction
Primary TypeDiode
Rectifier Typefull-wave
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Cathode Current90 mA
H-C Voltage500 V
Audio Performance
Key Features
- Miniature construction
- Full-wave rectification
- Indirect heating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Capacitive Input Filter | 350 V | — | — | — | 90 mA |
| Inductive Input Filter | 450 V | — | — | — | 90 mA |
Application Notes
Commonly used as a full-wave rectifier in radio equipment with inductive or capacitive filters.
Datasheets
Datasheet: 6FX4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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