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Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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12BNP4A vacuum tube outline illustration

Tube-number record

12BNP4A

0 archive entries

12BNP4A is a tube type in the TubeDatabase archive (class: Picture Tube). Recorded specifications: brand RCA, year 1965, construction Display / CRT, socket CRT base (B7 family), and maximum plate voltage 15000 V. The archive does not yet hold a photographed example of this type.

BrandRCA
ClassPicture Tube
BaseCRT base (B7 family)
Filament6.3 V @ 450 mA

Construction

Primary TypeDisplay / CRT
EnvelopeJ99C/E
Sections1

Filament / Heater

Heater NotesHeater Warm-up Time (Average): 11 seconds

Absolute Maximum Ratings

Plate Voltage15000 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Cathode-Drive Service13000 V————

Application Notes

The grid-No.4 voltage required for optimum focus of any individual tube will have a value anywhere between -100 and +300 volts.

Filters

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Manufacturers

Brands

    0 results
    Grid 2 Voltage550 V
    Grid 1 Voltage-185 V
    H-C Voltage300 V

    Audio Performance

    Key Features
    • Low-voltage electrostatic focus
    • No ion-trap magnet required
    • 110° Magnetic Deflection
    • Aluminized Phosphor
    • Filterglass Faceplate