Electronics Forum | Thu Jul 06 04:47:18 EDT 2006 | Rob
Hi Chris. would have loved to have tried PIHIR on the board, except it was single sided. Still, it would have solved the earthing issues.
Electronics Forum | Wed Jul 19 14:53:39 EDT 2006 | amol_kane
i think the most important thing to consider is the # of reflows. is this a double sided assembly? if so OSP degrades during the first LF reflow. also there are many studies out there that show the wetting on OSP is inferior to some of the other comm
Electronics Forum | Fri Jul 21 15:29:20 EDT 2006 | choppy
I've seen something like that on our CP5. The problem was the nut retaining the leadscrew to the bearing (motor side) that became too tight due to an error from the operator.
Electronics Forum | Fri Jul 28 08:51:50 EDT 2006 | russ
Are all these defects related to the trace that enters pad? Looking at #2, the good fillet has side trace entry and the bad has front entry. I would suggest that a profile check is in order, then the paste would be next culprit. Russ
Electronics Forum | Mon Jul 31 21:14:30 EDT 2006 | chrisgriffin
Does any one know how far left or right from center the aperatures can be? If I had a 6" board, and a stencil with cut-outs for both sides right and left of center, would I have problems?
Electronics Forum | Wed Aug 16 14:30:31 EDT 2006 | slthomas
What do you mean by "near the pad of SMT component"? The end of the pad, side of the pad, or perhaps adjacent to the part body, between terminations? One solder ball per component, or many, perhaps of different sizes?
Electronics Forum | Fri Sep 15 05:37:49 EDT 2006 | Rob
Are you talking 0.02" (1.225mm) if so then no it's not a great idea. if you must wave it can you go to a PLCC and through hole socket it on the other side of the board?
Electronics Forum | Mon Sep 25 08:15:53 EDT 2006 | egrice1@wi.rr.com
Most companies are double sided paste and reflow, then selective soldering the thru-hole. This will give you the best results and with much more consistency than with Wave Soldering.
Electronics Forum | Fri Sep 15 21:24:28 EDT 2006 | realchunks
Use a back door connector. Place and reflow the connector like any other. But, the PC bosrd is cut open directly under the connector allowing the male portion to go thru the PCB and mate with the female connector. Both PCBs would have SMDs mounted
Electronics Forum | Wed Sep 20 16:34:13 EDT 2006 | jimmyjames
no, we can't go to screening as the majority of the products being glued are already stuffed with through-hole that has been bent and clipped. (boards weren't laid out in a fashion that allows for double sided SMT then through hole insertion)
