Tube-number record

23NP4

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BrandRCA

ClassPicture Tube

BaseCRT base (B7 family)

Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT

EnvelopeGlass

Base MaterialGlass

SectionsSingle

Filament / Heater

Heater NotesHeater warm-up time: 11 seconds

Absolute Maximum Ratings

Plate Voltage22000 V

Grid 2 Voltage70 V

H-C Voltage450 V

Audio Performance

Key Features

Aluminized Screen
Low-Voltage Electrostatic Focus
No Ion-Trap Magnet Required
Cathode-Drive Operation
114° Magnetic Deflection

Typical Operation

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Cathode-Drive Service	16000 V	—	—	—	0.2 mA

Application Notes

The 23NP4 is a directly viewed, rectangular glass picture tube featuring a relatively flat compound radius faceplate. It uses a low-grid-No.2-voltage gun for improved cathode-drive sensitivity.

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