Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

19CCP4

Nineteen-inch direct-view monochrome television picture tube with electrostatic focusing, magnetic deflection, and an aluminized P4 screen. Manufacturer documentation places it in the high-voltage picture-tube family used for bright, high-contrast receiver display.

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

Description

19CC direct-view monochrome television CRT with electrostatic focus, magnetic deflection, aluminized P4 screen, and gray/filter faceplate construction.

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
-
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
20000 V

Published Sylvania television-CRT ratings, focus/grid conditions, capacitances, heater-cathode limits, and typical operating points retained where legible.

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

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Focusing method

    Electrostatic

  • Deflection method

    Magnetic

  • Horizontal deflection angle

    81 deg

  • Diagonal deflection angle

    92 deg

  • Vertical deflection angle

    67 deg

  • Fluorescence

    White

  • Persistence

    Short to medium

  • Heater voltage

    6.3 V

  • Heater current

    600 mA

  • Light transmission

    44 %

Construction

  • Phosphor

    Aluminized P4

Other

  • Maximum anode voltage

    20000 V

  • Typical anode voltage

    16000 V

  • Typical focus-electrode voltage maximum

    400 V

  • Typical grid2 voltage

    300 V

  • Cutoff voltage range

    -35 to -72 V

  • Grid1 circuit resistance maximum

    1.5 Mohm

  • Focus-electrode voltage minimum

    -550 V

  • Focus-electrode voltage maximum

    1100 V

  • Grid2 voltage maximum

    550 V

  • Grid1 negative bias maximum

    -155 V

  • Grid1 negative peak maximum

    -220 V

  • Grid1 positive peak maximum

    2 V

  • Heater-cathode voltage maximum during warm-up

    450 V

  • Heater-cathode voltage maximum after warm-up

    200 V

  • Heater-cathode voltage maximum heater positive

    200 V

Capacitance

  • Grid1-to-all capacitance

    6 pF

  • External conductive coating to anode capacitance maximum

    1700 pF

Application

  • Application

    Monochrome television picture display