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Tube Tinker — Electron Tube Database
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Specialized - Cathode Ray ·CathodeRay

5CJP11

Five-inch high-definition flat-face P11 CRT designed for photographic applications, radar, high-definition television recording, and related display or flying-spot service. Its high-voltage construction emphasizes fine detail and image resolution.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
NEOEIGHTAR7
Base pins
12
Nominal heater
6.3 V / 600 mA

Description

High-definition flat-face P11 CRT designed for photographic applications, radar, high-definition television recording, and related display or flying-spot service.

Socket description

Small-button Neoeightar 7-contact CRT base family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
NEOEIGHTAR7
Base pins
12
Nominal heater voltage
6.3 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances
Max plate voltage
27000 V
Max screen voltage
700 V

High-definition P11 CRT for photographic, radar, TV recording, and flying-spot applications.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1945 Litton Industries

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Screen Voltage Maximum

    - to 27000 V

    Screen/ultor

  • Grid 2 Voltage Maximum

    - to 700 V

  • Grid 1 Negative Bias Maximum

    - to 200 V

    Magnitude

  • Screen Voltage Typical

    27000 V

  • Grid 2 Voltage Typical

    500 V

  • Grid 1 Visual Extinction Voltage

    -116 V

Characteristic

  • Grid 1 Capacitance

    8 pF

    To all other electrodes

  • Cathode Capacitance

    5 pF

    To all other electrodes

  • Phosphor

    P-11

    Micro-selected aluminized blue; fast decay

  • Deflection Angle

    40 deg

    Approximate

  • Resolution

    3000 TV lines