Electronics Forum | Fri Feb 11 13:02:01 EST 2011 | deanm
Thank you for all who read this with interest and especially those who replied. I have considered the points posted and here is what we came up with: We all agree that double inspection is a wasteful operation especially if the operator is more crit
Electronics Forum | Thu Aug 07 22:56:50 EDT 2008 | dlocampo
First all, you must define the specific defects that you wanted to screen out by your AOI system based on its capability, so you can allocate the undetected defects on your other means of inspection methodology. Then optimize your AOI inspection para
Electronics Forum | Tue May 23 22:47:10 EDT 2000 | Dreamsniper
BASIC: No. of defective joints PPM = ----------------------------- x 1000000 Total No. of Joints inspected hope this will help...
Electronics Forum | Wed Jul 09 14:47:39 EDT 2014 | deanm
I'm looking for a typical SMT placement defect rate from others in the field so I can judge whether or not we are in an acceptable range. If I give you a board with 200 components (0603, 0805, SOICs, 20mil MSOPs, tantalums, DPAKs and a few 20mil fin
Electronics Forum | Fri May 11 15:33:36 EDT 2012 | markhoch
I personally believe that you money is best spent on improving your process. An automated printer will help make your process more repeatable, thus easier to control. An AOI will not improve your quality, it will only make your defects easier to dete
Electronics Forum | Wed Jul 09 12:43:18 EDT 2008 | grics
I think this depends on what you are reporting as defects... I would place my inspection first, team up my Touch-up/Rework into one category. If for any reason I need to hit a joint after leaving my oven, that to me is classified as a defect and s
Electronics Forum | Mon Mar 10 23:40:21 EDT 2008 | porferio
Philippine SMT lines are now using solder paste inspection machine. Its worhty. it enable to minimize defects. most common machine use is BPC707ADX. you must have. Porferio
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 | Fri Dec 01 17:18:31 EST 2006 | Jim
Doing a head-to-head comparison is best. Use the same boards with the same defects to compare programming time, inspection speed, amount of inspection types you can program for and of course defect detection. Finding the defects that occur in your pr
Electronics Forum | Wed Oct 31 21:52:10 EDT 2007 | davef
We wouldn't expect the ceramic of the capacitor to conduct very much heat. [We're surprised how high the thermal conductivity of Al2O3 is: (30W/m-�C).] Can we assume that you're talking about parts that are defective at incoming inspection?
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