Tube-number record
12DF5
0 archive entries
12DF5 is a tube type in the TubeDatabase archive (class: Double Diode Full Wave Rectifier). Recorded specifications: brand TUNG-SOL, year 1957, construction Diode, socket Noval (B9A), and maximum plate voltage 450 V. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassDouble Diode Full Wave Rectifier
BaseNoval (B9A)
Filament12.6 V @ 450 mA
Construction
Primary TypeDiode
Rectifier TypeFull Wave
EnvelopeGlass Bulb
Sections2
Filament / Heater
Heater NotesSeries or Parallel connection
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Full Wave Rectifier - Capacitor Input Filter | 325 V | — | — | — | 100 mA |
| Full Wave Rectifier - Choke Input Filter | 450 V | — | — | — | 100 mA |
Application Notes
The 12DF5 is a double diode full wave rectifier in the 9-pin miniature construction designed for use in equipment with relatively high current requirements.
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