Tube-number record
5QP4
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BrandGeneral Electric
ClassCathode-Ray Tube
BaseOctal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater Notes0.6 Ampere +/- 10%
Absolute Maximum Ratings
Plate Voltage12000 V
Plate Dissipation6 W
Grid 2 Voltage410 V
Grid 1 Voltage-125 V
H-C Voltage125 V
Audio Performance
Key Features
- Reflective metal-backed screen
- Industrial applications
- Magnetic focus
- Magnetic deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Conditions | 10000 V | — | — | — | — |
Application Notes
The metal-backed screen reduces screen charging and increases brightness. Brilliance and definition decrease with decreasing anode voltage; anode voltage should not be less than 5000 volts. Grid-No. 1 voltage for visual extinction ranges from -28 to -72 volts.
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