Electronics Forum | Thu Jun 02 10:14:27 EDT 2005 | zartacross
hi! i am concern with the position of the workers in terms of visual inspection,since they deal with very small and intricate parts in pcbs. I would just like to ask which is better to have, the standing or sitting positions for them? specially that
Electronics Forum | Mon Apr 25 11:24:31 EDT 2005 | Daan Terstegge
I have a question about inspection, touch-up, and how far you need to go to get a product that meets the required IPC-spec. According to some reports (i.e. "New Study Reveals Component Defect Levels" by Stig Oresjo of Agilent) the average defect leve
Electronics Forum | Wed Apr 27 11:43:32 EDT 2005 | patrickbruneel
Hi Daan, What we did in the time was pareto analyses on all board designs to determine the critical areas (mainly design errors) and only inspect those specific problem areas. Every batch had a copy of the PC board with problem areas marked and only
Electronics Forum | Thu Jun 02 12:44:13 EDT 2005 | russ
Your inspection people will tell you what they need. We have some that prefer to stand while others sit. It has to do with chair / table / operator heights. e.g. tall table with a short operator they will want/need to stand and vice versa. Usuall
Electronics Forum | Mon Jan 05 09:59:51 EST 2009 | prkonrad
HI, i work for an EMS company and i got a few remarks on the solder mask question. In the manufacturing of PCBs there should be no difference if they use other color solder mask, but in the production of electronic assembly it could make a difference
Electronics Forum | Fri Sep 27 13:53:27 EDT 2002 | pr
We used it only for operator verification of placement accuracy, your boardhouse should be able to show you examples of what they look like. They basically outline the outside edge (corner)of the part so you have a visual, after placement (since you
Electronics Forum | Fri Jul 06 00:22:49 EDT 2001 | DL
Thanks Dave, and yes we can leave the solder there in this instance. These panels, 12up, are NCMR from the customer. The customer is saying that after the panels have been reflowed 5 times! solder starts to accumulate under the mask. Get this, My sen
Electronics Forum | Fri Sep 16 11:28:20 EDT 2011 | dwanzek
I am looking for input on good blacklight to inspect silicon coating coverage on PCB's. This inspection is visual. Any advice or recommendations on lamps or bulbs?
Electronics Forum | Thu Apr 27 21:20:38 EDT 2000 | Dean
Here are some pointers to use during your X-ray inspection. Microcracking is virtually impossible to determine with X-ray. However, I suspect you are looking for "hard" opens. Those are much easier to find visually. If using a paste-and-place pro
Electronics Forum | Sat Jun 12 10:23:18 EDT 1999 | Dean
| How are you inspecting pcbs post-reflow, are you inspecting all or sampling. The type of assembly involved would be mainly chip components with a mix of actives and a few 25mil and under pitch. | If you sample what are your fault rates looking lik
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