Study on the method of reliability predication for contacts

摘要

This paper has developed a new method of the contact resistance measurement; that of measuring current with a square pulse (pulse width is 300 /spl mu/S). The range of the pulse current is from 1 A to 100 A. We have used the new method during the test for the contacts in several conditions and found three regularities of contact resistance changing with the pulse current. The new method of contact resistance measurement has the advantage of the reliability predication for the contacts that need not be taken to the laboratory for microanalysis even when the contact resistance is not high and the system failure does not happen.