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5X353D

Specialized Ferranti cathode-ray display tube documented for precision visual service, with manufacturer-defined electron-optical, screen, and deflection characteristics for type 5X353D.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: B9A
Socket code: -
Base pins: 9
Nominal heater: 6.3 V / 300 mA

Description

Hybrid-deflection radar cathode-ray tube with low-voltage electrostatic focus, magnetic X deflection, and electrostatic Y deflection.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: B9A
Socket code: -
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B9A - 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: 4000 V

Ratings, characteristics, typical operating points, and capacitances were extracted from the supplied Ferranti 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

1963 Ferranti

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
300 mA
FocusingMethod
LowVoltageElectrostatic
DeflectionMethod
HybridMagneticXElectrostaticY
ScreenConstruction
Radar display

Other

FinalAnodeVoltageMaximum
4000 V
HeaterCathodeVoltageMaximum
200 V
GridCathodeResistanceMaximum
0.5 Mohm
CathodeResistanceMaximum
1 Mohm
FirstAndThirdAnodeVoltage
2000 V
SecondAnodeVoltageForFocus
-50 to +100 V