Electronics Forum | Thu Jul 15 14:38:38 EDT 1999 | JohnW
| | | | | | Hi, | | | | | | | | | | | | I need some urgent informations on stencil design guidelines on how to perform epoxy printing on 0603 and 0402 components. Could anyone help? ( Reflow process is not possible because of some other constriants)
Electronics Forum | Thu Jan 04 18:54:34 EST 2007 | russ
We use DPMO when talking to customer and yield when trying to figure out how to make more money in the shop. Does that make sense? Russ
Electronics Forum | Thu Jan 04 20:31:21 EST 2007 | Ben_T
Have you thought about an AOI system? With the system we have where I work, I'm able to run queries that'll tell me DPMO, yield, and pass/fail rates on a board level, part level, and opportunity level. Furthermore, this data can be broken down to see
Electronics Forum | Thu May 22 22:26:01 EDT 2003 | ChrisX
Hi Guys, Sorry for asking stupid questions. Are SPC, PPM and DPMO related to each other? Do they affect each other then? What is their inter relations? Can someone explain to me what are their purposes? thanks
Electronics Forum | Fri May 23 15:31:46 EDT 2003 | daanterstegge
Hi ChrisX, DPMO = number of defects per million opportunities. PPM (parts per million) is exactly the same, although the terminology is less clear about what it means. SPC(statistical process control) is a methodology based on statistical technique
Electronics Forum | Fri May 23 03:39:06 EDT 2003 | mantis
Hi Chris, I found this site to be very useful and explanitory while calculating the sigma level of or company. http://www.isixsigma.com/sixsigma/six_sigma.asp It has explanations on anything and everything process control related. Regards,
Electronics Forum | Fri May 23 20:57:00 EDT 2003 | iman
Here's a great book, "Six Sigma for Electronics Design And Manufacturing", by : Sammy G. Shina, Ph.D publisher : McGraw-Hill category : Professional Engineering
Electronics Forum | Wed Feb 16 16:41:31 EST 2005 | Mrduckmann2000
Pallets will not work in this case because the wonderful designers put 0402's between the legs and all around the legs of the thru-hole connectors. There are 18 thru-hole connectors on this board and 200 - 0402's around them. The 0603's that are al
Electronics Forum | Wed Feb 09 11:13:33 EST 2005 | mrduckmann2000
Russ, Are you placing 0402's on glue by using a stenil at present? I am afraid the appertures will be too small for the glue to release from the stencil. Are you having any issues with this? Thank you for the reply. Mike
Electronics Forum | Tue Feb 08 23:29:54 EST 2005 | mrduckmann2000
Help! Does anyone know how to get a Camolot Gem II machine to put down dots for 0402 placement? I have been working with Electrovert Tech's that say their machine WILL place dots for 0402's. I have reduce the speed of the pumps to half the speed,
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