Electronics Forum | Thu Dec 13 10:39:38 EST 2007 | lloyd
Hi Mefunak, I'd say that the vacuum holding circuit is at fault. If the component is picked OK from the feeder ('vacuum check after pickup' is switched on) then the component is being dropped from the head as the gantry moves to the placement positi
Electronics Forum | Wed Mar 26 09:26:12 EDT 2008 | lloyd
I know you said you checked your clamps but another look will do no harm. we had a very similar issue a while back, and it turned out that the plastic shim under the chase clamp magnet was damaged. This caused the chase clamps not to release properly
Electronics Forum | Tue Apr 01 09:36:52 EDT 2008 | lloyd
Hi folks, I'm looking your opinion on the quality of this component. It is an 0603 inductor made by EPCOS, B824496C. We are finding that it has a tendency to partially tombstone. I was thinking that the coating extending out on to the terminations c
Electronics Forum | Wed Sep 10 07:42:52 EDT 2008 | lloyd
Can you provide a bit more info on your machine setup. I not full fimilar with the S-27 so a few points may not be relevant to your machine. Are you using Siplace Pro. Are you using the standard GF for the 0201 component. Do you have the component
Electronics Forum | Wed Aug 29 09:44:46 EDT 2012 | lloyd
I have been down this road several times in the past and have also found it very frustrating. This time I got our 6 sigma/lean guys involved and their solution was to implement a check sheet that the operators had to fill in at the start of their shi
Electronics Forum | Thu Jul 14 09:26:30 EDT 2005 | saragorcos
Hello Lloyd, I have posted your picture in my photo library for all to see - you can find the page at http://www.residues.com/circuitree_pictures.html Hopefully that helps! Sara
Electronics Forum | Thu Jul 14 16:12:22 EDT 2005 | russ
Lloyd, could you get us a pic from the side? It looks to me as if the pads may be too small or far apart, but I can't tell. We normally use a 35 x 35 pad size on .07 centers when we have the luxury of designing them that is.
Electronics Forum | Wed Jul 25 13:29:24 EDT 2007 | realchunks
Hi Lloyd, Homeplates will get rid of solder balling. They are only recommended "backwards" for 0402 or smaller (Points point away from each other). If you do this, you will have a full pad width of paste on the pad for the part to stick in. Obvio
Electronics Forum | Wed Jul 24 10:00:40 EDT 2002 | Claude_Couture
Hi Lloyd! You mention "bad handling" as the cause of the PCB breakage... One way to convince operators to be careful in handling PCBs is to make them pay for the broken ones! If the fault is theirs, they should pay for it. If it's not their fault, fi
Electronics Forum | Thu Jul 07 15:32:37 EDT 2005 | saragorcos
Hi Lloyd, Have you done any ionic analysis to find out what the flux residue is composed of? If you can eliminate the source residue, then your problem obviously should go away. Though tombstoning isn't known to be much of a functional problem it i
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