Tube-number record
12FX5
0 archive entries
12FX5 is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand RCA, construction Pentode, socket Miniature 7-pin (B7G), maximum plate voltage 150 V, and maximum plate dissipation 5.5 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPower Pentode
BaseMiniature 7-pin (B7G)
Filament12.6 V @ 450 mA
Construction
Primary TypePentode
Envelope5D
Sections1
Filament / Heater
Heater NotesHeater warm-up time: 11 seconds
Absolute Maximum Ratings
Plate Voltage150 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 110 V | 13500 | 17500 | — | 36 mA |
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