So what is an optimal test mix? A discussion of the SEMATECH methods experiment

The SEMATECH "Test Methods Evaluation" study, Project Number S-121, is an experiment to determine the relative merits of several test methodologies often used by SEMATECH member companies and other IC manufacturers. Conclusions drawn from the experiment thus far have indicated that each test methodology uniquely detects defects. This experimentation and analysis would not have been possible outside a consortium setting such as SEMATECH. Its conclusions may affect other major segments of the industry, including ATE manufacturers, CAD vendors, and academia. This paper gives a brief overview of the experiment and summarizes its findings.