Tube-number record
5FP7-B
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BrandGeneral Electric
ClassCathode-Ray Tube
BaseOctal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeJ39
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesHeater current: 0.6 Amperes (600 mA)
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 2 Voltage700 V
Grid 1 Voltage-180 V
H-C Voltage180 V
Audio Performance
Key Features
- 5-Inch Round Glass Bulb
- Magnetic Focus
- Magnetic Deflection
- Long Persistence P7 Phosphor
- High-Resolution Electron Gun
- Small Spot Size
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operating Conditions | 7000 V | — | — | — | 0.2 mA |
Application Notes
Recommended for radar and oscillographic applications requiring long persistence. Anode and Grid-No. 3 are connected internally. Minimum anode voltage should generally not be less than 4000V.
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