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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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Tube-number record

12DP-A

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ClassCathode-ray Tube
BaseOctal
Filament6.3 V @ 600 mA

Construction

Primary Type
Display / CRT
EnvelopeGlass
Base MaterialMedium-Shell Octal 8-Pin
SectionsSingle

Filament / Heater

Heater Notes6.3 Volts, 0.6 Ampere

Absolute Maximum Ratings

Plate Voltage10000 V
Grid 2 Voltage700 V
Grid 1 Voltage-125 V
H-C Voltage125 V

Audio Performance

Key Features
  • Magnetically focused
  • Magnetically deflected
  • Long persistence screen
  • 12-inch screen diameter
  • P7 Phosphor

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Condition 14000 V———0.2 mA
Condition 27000 V———0.2 mA

Application Notes

The Type 12DP-A Cathode-ray Tubes are primarily designed for radar indicator applications. Recommended only for replacement purposes. At or near maximum anode ratings, the effective resistance of the anode supply should limit input power to 6 watts.

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