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

Specialized - Cathode Ray ·CathodeRay

5BCP11

Five-inch magnetically focused and deflected cathode-ray display tube with a P11 blue short-persistence screen. Its magnetic scanning system and phosphor characteristics support specialized instrument and oscillographic display service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
NINAR9
Base pins
-
Nominal heater
6.5 V / 300 mA

Description

Sylvania 5-inch cathode-ray tube with magnetic focus, magnetic deflection, and P11 blue, short persistence. Published electrical ratings, capacitances, and operating conditions were extracted from the supplied datasheet.

Socket description

Ninar 9-contact CRT/photomultiplier base family (JEDEC E9-37)

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
NINAR9
Base pins
-
Nominal heater voltage
6.5 V
Nominal heater current
300 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
11000 V

Published CRT maximum ratings, capacitances, and typical operating conditions extracted from supplied Sylvania datasheet.

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

Characteristic

  • Heater Voltage

    6.5 V

  • Heater Current

    300 mA

  • FocusingMethod

    Magnetic

  • DeflectionMethod

    Magnetic

  • Phosphor

    P11 blue, short persistence

  • MinimumUsefulScreen

    4.25 in

  • Cathode To All Capacitance

    3.7 pF

  • GridToAllCapacitance

    3.5 pF

  • LineWidthMaximum

    0.011 in

    BeamCurrent=200uA

  • SpotPositionMaximum

    0.25 in

Other

  • FinalAnodeVoltageMaximum

    11000 V

  • FinalAnodeVoltage

    8000 V

  • FocusCoilCurrentApproximate

    56 to 84 mA

  • GridVoltageForCutoff

    -25 to -75 V

  • GridCircuitResistanceMaximum

    1.5 Mohm

  • AnodeInputMaximum

    6 W

  • GridNegativeBiasMagnitudeMaximum

    220 V