Tube-number record
3FP7
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ClassCathode Ray Tube
BaseDiheptal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesA.C. or D.C.
Absolute Maximum Ratings
Plate Voltage4400 V
Grid 2 Voltage2200 V
H-C Voltage125 V
Audio Performance
Key Features
- Electrostatic focusing
- Electrostatic deflection
- Supplementary High-Voltage Electrode
- Snap Connector bulb side terminal
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 2000 V | — | — | — | 0.25 mA |
| Condition 2 | 3000 V | — | — | — | — |
| Condition 3 | 4000 V | — | — | — | — |
Application Notes
For high-velocity scanning, it is recommended that the anode No. 3 voltage be not less than 3000 volts. Brilliance and definition decrease with decreasing anode voltage.
Datasheets
Datasheet: 3FP7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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