Tube-number record
12FP7
0 archive entries
12FP7 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Research Enterprises, Ltd., construction Display / CRT, base Plastic, socket Diheptal, and maximum plate voltage 4400 V. The archive does not yet hold a photographed example of this type.
BrandResearch Enterprises, Ltd.
ClassCathode Ray Tube
BaseDiheptal
Filament6.3 V @ 0.6 mA
Construction
Primary TypeDisplay / CRT
EnvelopeJ96D
Base MaterialPlastic
SectionsSingle
Filament / Heater
Heater NotesAllowable variation +/- 10%
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 2000 V | — | — | — | — |
| Condition 2 | 4000 V | — | — | — | — |
| Condition 3 | 3000 V | — | — | — | — |
Application Notes
Anode #2 voltage should not be less than 2000 volts for adequate brilliance and definition.
Datasheets
Datasheet: 12FP7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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