Good morning Techneters,
     
 We have been finding defective PWBs from time to time.  The defect 
 rate is not alarming all the time, however it seems like there is a 
 small number of defective PWBs are coming in (steadily) with various 
 defects, such as, open or high resistant via, open trace, poor 
 solderability, etc.
     
 My question to you is, "Is there some percentage that is typical for 
 escaping defects out of a fab house?"  I know ideally it should be 
 zero.  What is your experience?
     
 Thanks in advance,
 Paresh Patel
 Mfg. Engr.
 Oneac Corp.
 847-816-6000 x-704.

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