Tube-number record
C12FM
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BrandBrimar
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeTetrode
EnvelopeMagnetic Teletube
SectionsSingle
Filament / Heater
Heater NotesUnder series operated conditions the maximum heater voltage must not exceed 7.5 volts RMS.
Absolute Maximum Ratings
Plate Voltage9000 V
Grid 2 Voltage350 V
Cathode Current0.175 mA
H-C Voltage150 V
Audio Performance
Key Features
- Tetrode Gun
- Ion Trap
- External Conductive Coating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operating Characteristics | 7000 V | — | — | — | — |
Application Notes
The magnet should be located on the neck with the arrow pointing towards the screen and along the line marked on the neck. Adjust for optimum brightness.
Datasheets
Datasheet: C12FM.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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