Electronics Forum | Wed Jun 10 11:21:04 EDT 1998 | Kelly Morris
Does anyone have any info./studies on what the percentage or PPM defect rates are for each part of the typical SMT process. Example: Screen Print = 45% of total defects Component Placement = 25% of total defects
Electronics Forum | Thu Aug 15 06:47:01 EDT 2002 | Steven
I am running a SMT production line but the defects are high. I do not want to encounter defects after the reflow whereby rework is costly and time consuming. Can anyone share with me the strategies of achieveing a low defect or zero defects product
Electronics Forum | Wed Jul 24 23:41:46 EDT 2002 | ppcbs
Well, I guess the defect rate would depend on whose doing the job. If you had some idiot doing it, I guess you would have a high defect rate. On the other hand, if you had me doing it, there would be zero defect.
Electronics Forum | Wed Mar 22 15:21:43 EST 2006 | patrickbruneel
Rob, Very interesting The defect of the month that isn't a defect, that was a defect with Sn/Pb but isn't a defect in lead-free. I wonder if wave master Larry can solve the puzzle?
Electronics Forum | Sat Jan 15 13:13:33 EST 2000 | Mark Wiegold
Steve, Basically in answer to your question, there is no real set number for defects. Defect rates will vary between products and companies. If my company was running the same product as yourself then there is no reason to suggest that the defect ra
Electronics Forum | Thu Apr 28 01:40:14 EDT 2022 | sophyluo1985
Advantages of SPI 1. Reduce defects SPI was first used to reduce defects caused by improperly printed solder paste. Therefore, the primary advantage of SPI is its ability to reduce defects. Defects have always been a major problem when it comes to
Electronics Forum | Wed May 09 01:40:55 EDT 2001 | Dreamy
Hi Michael, DPMO Index calculation - The total number of defects (Dc + Dp + Dt) on a completed Printed Circuit Board divided by the total number of defect opportunities (Oc + Op + Ot) for that PBA multiplied by 1 million. Your calculation deals only
Electronics Forum | Wed Jun 10 13:24:35 EDT 1998 | Justin Medernach
| Does anyone have any info./studies on what the percentage or PPM defect rates are for each part of the typical SMT process. | Example: | Screen Print = 45% of total defects | Component Placement = 25% of total defects |
Electronics Forum | Sat Apr 26 01:27:33 EDT 2003 | Iman
no S**t, I was going into SMTnet to post a question, on : 1) what is the actual "physics" behind "Leaching" defect? what is the accurate desciption to define this defect? how to eliminate the general causes to this defect? If encounter, what work pr
Electronics Forum | Thu Jul 03 08:53:27 EDT 2008 | rgduval
I would...and then use the data of the known issues as part of the secondary analysis. The defect is a defect, one way or the other. You can use the secondary analysis of your PPM numbers to continue to drill down in the process. If your overall P
