Electronics Forum | Fri Apr 08 16:26:36 EDT 2005 | Grant
Hi, It seems weird that an automated pick and place machine at a board shop would not be up to NASA standards, but placing the components by hand would be. However most SMT will self center a bit, so if your close enough, you should be ok. You rea
Electronics Forum | Thu May 12 04:37:30 EDT 2005 | Rob
1) Only if it's a real enhancement, and not to fix a fault in your design. 2) No, it just has to be instinctive & accurate. 3) Barcode is fine by me, but others swear by data matrix 4) Better than 1 in 10,000 - which could be once every 5 boards.
Electronics Forum | Thu May 26 06:59:06 EDT 2005 | CLampron
Good Morning, We have several Mirtec table top machines. We bought the first one when it was under the Samsung name. We had the advantage of doing a side by side comparison with several other systems. The Mirtec was the leader in performance. Since
Electronics Forum | Wed Jun 22 06:18:07 EDT 2005 | dougs
We started looking at tabletop AOI systems last year, one of the main criteria, as we are a SC was that the sales engineer programmed one of our boards in front of us so we could see just how easy to program it was, also high on the list was performa
Electronics Forum | Fri May 27 08:36:26 EDT 2005 | K
Thanks for your replies, to go a little deeper..... The sample run I chose was a very small run.... 3 PCB's, 340 parts in total required for the 3 boards. Machine mischuck info gave a total of 360 parts used, 20 lost to various reasons, recognition/
Electronics Forum | Wed Aug 09 09:25:57 EDT 2006 | Mike F
Am I missing something here? I usually put some type of stiffener or support on the leading edge to make sure the PWB doesn't sag in the middle from the preheat. If I had to add a bean bag with shotgun pellets or BB's I would have boards falling out
Electronics Forum | Mon Jun 27 14:20:57 EDT 2005 | Bob R.
If you visually inspect the solder joints of the first dozen or so boards with the Pb free parts and you're meeting workmanship standards then I wouldn't worry about it. When we started getting the first barrage of Pb free parts a couple years ago w
Electronics Forum | Fri Jul 29 19:12:30 EDT 2005 | Jason Fullerton
In the true sense of the term, tombstoning can only occur during reflow. Now, if your solder joints are cracking during thermal cycling and opening on one end you still have a problem - it just isn't "tombstoning". What laminate are you using on yo
Electronics Forum | Fri Jul 15 13:28:55 EDT 2005 | Brian
A process consists of much more than just thee machine. When developing a cause and effect diagram ffor the process, there are many parameters that fall outside the machine itself. There are Man, Machine, Methods, and Materials. Just monitoring th
Electronics Forum | Wed Jul 20 16:51:03 EDT 2005 | pjc
There is a spec I read that states +/- 0.001" (0.025mm) print deposition accuracy and repeatability is more than adequate for 0201-chip printing. I don't think any print studies where done for 01005 chips yet. There are several other factors besides
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