Several years back we had run-off  for AOI equipment  to inspect for coating defects.  Had 2 equipment providers bring equipment on site and worked with them for several weeks. 
The results were rather disappointing  in that neither was reliable enough  to replace an human inspector. 
Seemed like the defects that the systems could collect  needed to be rather gross and obvious. 
Could not  reliably identify those smaller scale defects (bubbles between leads, FOD, thick fillets, etc.) that class 3 customers seemed to also care about. 

Would appreciate  any supporting  or contradicting experiences anyone is willing to share. 

Thanks

Rich  Kraszewski 
Senior Staff Process Engineer
Plexus 


* * * * * * * * CONFIDENTIALITY NOTICE * * * * * * * *

This e-mail and any attachments are confidential from Plexus Corp. and may contain information which is privileged, confidential, and/or protected by non-disclosure agreements.  They are intended solely for the use of the named addressee(s).  .  Any unauthorized use or disclosure may be unlawful.  If you are not a named addressee, you must not use, disclose, retain or reproduce all or any part of the information contained in this e-mail or any attachments If you have received this transmission in error, please destroy it and notify us immediately by return e-mail or by calling + 1 888 208 9005.