@Rich Krajewski, thanks for your comments. No question, data integrity is a big challenge, but so are the manufacturing operations of global semiconductor companies. They don't have devices that come from just one factory, but many factories. The issue with in-house solutions is that they are typically done ad-hoc and the way data is collected at different factories or subcons/OSATs is not always consistent which makes it difficult if not impossible to extract manufacturing intelligence from their data.
The benefit of a commercial-solution that understands the global, heterogeneous nature of manufacturing data, is that you can collect data from different vendors, with different test equipment, at multiple stages in the manufacturing process (wafer sort, final test etc.) with excellent data integrity and consistency and in near real-time (within minutes).
I can't speak for other companies involved in manufacturing BI&A, but we processs parametric data from over 1 billion parts per month and deliver that information safely and securely to the biggest IDMs and fabless companies in the industry. One of the many benefits of our solution is the ability to provide highly accurate and reliable data so that critical business decision can be made 24/7.
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