Dust test results on multicontact circuit board connectors

A study to determine if the normal force of a connector is a factor in maintaining a low contact resistance after an accumulation of dust in the pins and receptacles is discussed. A dust mixture of hygroscopic salts and natural mineral particles was used. The test connectors included the standard 2-...

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Bibliographic Details
Published in:IEEE transactions on components, hybrids, and manufacturing technology hybrids, and manufacturing technology, 1991-12, Vol.14 (4), p.802-808
Main Authors: DeNure, D.G., Sproles, E.S.
Format: Article
Language:English
Subjects:
Circuit testing
Connectors
Contact resistance
Electrical resistance measurement
Force measurement
Measurement standards
Minerals
Pins
Pollution measurement
Printed circuits
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Summary:A study to determine if the normal force of a connector is a factor in maintaining a low contact resistance after an accumulation of dust in the pins and receptacles is discussed. A dust mixture of hygroscopic salts and natural mineral particles was used. The test connectors included the standard 2-mm connector with a nominal normal force of 0.55 N, a special 2-mm connector with an extra low normal force of 0.35 N, and another connector with a normal force of about 1.5 N. Resistance values, as compared with values measured before the dust exposure, increased by less than 4 m Omega for the contact pair showing the largest increase. The results indicate that the lower normal force in high-density connectors does not adversely affect the ability of the connector system to tolerate particulate contaminants.< >
ISSN:0148-6411
1558-3082
DOI:10.1109/33.105137