Tube-number record
12FM6
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BrandGeneral Electric
ClassDuplex-Diode Triode
BaseMiniature 7-pin (B7G)
Filament12.6 V @ 0.15 mA
Construction
Primary TypeTriode
EnvelopeT-5 1/2
Base MaterialGlass
Sections3
Filament / Heater
Heater NotesOperation from 12-volt battery; Heater range 10.0V to 15.9V.
Absolute Maximum Ratings
Plate Voltage30 V
Cathode Current20 mA
H-C Voltage30 V
Audio Performance
Key Features
- Detector
- AVC Rectifier
- Transistor Driver
- Automobile Receiver Application
- Low Plate Voltage Operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Zero Bias | 12.6 V | 2400 | 5600 | 13.5 | 1.8 mA |
| Grid Leak Bias (2.2 Megohm resistor) | 12.6 V | 1300 | 7700 | 10 | 1 mA |
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