Tube-number record
4NP
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BrandElectronic Tube Corporation
ClassCathode Ray Tube
BaseSpecial / none
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular 3-1/2 inch
SectionsSingle gun
Filament / Heater
Heater NotesHeater current: 0.6 +/- 10% Amperes
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation6 W
Grid 2 Voltage1500 V
Grid 1 Voltage-200 V
H-C Voltage180 V
Audio Performance
Key Features
- 3-1/2 inch rectangular face
- Extreme shock resistant
- Severe vibration resistant
- High altitude (above 50,000 feet)
- Electrostatic focus and deflection
- Mono-accelerator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 2500 V | — | — | — | — |
Application Notes
Designed for use in equipment subject to extreme environmental conditions. Available with mumetal shield secured to the base. Mating socket required for high altitude use.
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