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8SA1

Special-purpose cathode-ray display tube documented for type 8SA1, with manufacturer-defined screen, focusing, and deflection characteristics for technical visual display.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: 8
Nominal heater: 6.3 V / 600 mA

Description

Mazda 8SA1 is an 8 cm electrostatic cathode-ray tube for oscillographic use. The family sheet gives 6.3 V, 0.6 A heating, electrostatic-deflection operating examples and maximum electrode-voltage limits.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 8
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: 1200 V

Electrostatic CRT; 1200 V is maximum second-anode voltage; first-anode maximum is preserved as a parameter.

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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Capacitance

Grid capacitance
10 pF
Deflection plate pair 1 capacitance
3 pF
Deflection plate pair 2 capacitance
4 pF

Other

Second anode voltage maximum
1200 V
First anode voltage maximum
400 V
Grid voltage minimum
0 V
Grid voltage maximum
-35 V
Maximum voltage between anode 2 and any deflection plate
500 V
Maximum grid resistance
1.5 MOhm
Maximum screen dissipation
10 mW/cm2