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5EJP2

Five-inch P2 cathode-ray instrument tube for oscillograph or measurement display, with manufacturer-specified focusing, deflection, accelerating voltages, and phosphor characteristics for precision waveform presentation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

Five-inch electrostatically focused and deflected precision-instrument CRT with P2 yellowish-green phosphor.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 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: 15000 V

Published source ratings and characteristics promoted where applicable; additional electrical and operating data retained as parameters.

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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Application

Application
Cathode-ray display / television / instrumentation

Characteristics

Focusing method
Electrostatic
Deflection method
Electrostatic
Line width
0.024 in
Horizontal deflection factor
9.4 to 12.5 V/cm
Vertical deflection factor
2.3 to 3.5 V/cm
Useful horizontal scan
10 cm
Useful vertical scan
6 cm
PDA helix resistance minimum
200 Mohm

Construction

Phosphor
P2 yellowish-green

Capacitance

Grid1-to-all capacitance
6 pF
Cathode-to-all capacitance
3.6 pF
X1-to-all capacitance
4.5 pF
X2-to-all capacitance
4.5 pF
X1-to-X2 capacitance
2.7 pF
Y1-to-all capacitance
3.8 pF
Y2-to-all capacitance
3.8 pF
Y1-to-Y2 capacitance
1.8 pF

Other

Post-accelerator voltage
15000 V
Helix lower-end voltage
1500 V
Pattern-adjustment voltage
70 V
Mean X deflection-plate potential
1500 V
Interplate shield voltage
1500 V
Mean Y deflection-plate potential
1500 V
Focus-electrode voltage range
375 to 625 V
Accelerator voltage
1500 V
Grid1 visual-extinction voltage range
-45 to -85 V
Heater-cathode voltage maximum cathode positive
200 V
Heater-cathode voltage maximum cathode negative
125 V
Deflection-plate to grid4 voltage maximum
500 V