PAT-Man Description
To improve reliability, semiconductor companies are increasingly using Part Average Testing (PAT). This is due to the strict quality requirements of the automotive industry. PAT identifies "outliers" that pass standard tests, but display abnormal characteristics. This reduces long-term reliability and quality issues. PAT identifies problematic parts by statistically analyzing and adjusting the pass/fail limit for multiple devices. This ensures that only the most reliable components are shipped to production. Part Average Testing (PAT) is only applicable to normal (Gaussian distributions) according to the Automotive Electronics Council AEC Q001-Rev C specifications. Many distributions are not Gaussian and require PAT outlier detector methods that are adapted to prevent excessive yield loss or incorrect detection. PAT-Man provides a comprehensive solution to Part Average Testing (PAT).
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