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Industry: Email Alert RSS FeedThe disappearing defects: compensating for PWB positional inaccuracies in 0201s
Circuits Assembly, Oct, 2007 by Chrys Shea
It's no secret that I am a big proponent of proactive process control. The experiment results provided me with more ammunition on my soapbox to preach about the long-term payback of small, upfront investments in maintenance and calibration. We crunched the data from many different angles, but it always showed the same result: Keep the process under control and the defects disappear.
A few final notes on this study: It was a substantial undertaking by a collaborative group of engineers and scientists at Jabil, Fuji, VI Technology and Alpha Metals who are due many thanks for their tireless efforts. This study was split into two phases. The current report reviews Phase 1. Phase 2 findings will be published in Spring 2008.
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Chrys Shea is an R & D applications engineering manager at Cookson Electronics (cooksonelectronics.com); chrysshea@cooksonelectronics.com. Her column appears monthly.
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