Electronics Forum | Fri Mar 19 05:21:11 EST 1999 | Vinesh Gandhi
Hi Folks, Need help, on white spots/marks which we are getting after wave soldering. This problem has started only once we have shifted to the no clean flux. Prior, to this we have been using aqueous cleanable flux without problems. If brushed vi
Electronics Forum | Mon May 26 07:52:06 EDT 2008 | kenshiikeda
Hi mates, I encounter a problem on PCB after going thru the LeadFree Solder Wave. It shows so much dirt or dross on the PCB surface. I have attached the picture for more details. I have tried to scope out suspected solder dross and oxidedized solde
Electronics Forum | Thu Nov 15 10:19:05 EST 2012 | davidmercader
Hi, We have problems with our wave soldering process. The problem is that during the same assembly, after wave soldering, some pcb’s look not clean and other pcb’s look good. We use lead free SAC305 solder and flammable flux. We think our proces
Electronics Forum | Mon Feb 24 20:51:52 EST 2003 | davef
Ryan, You are spot-on with your analysis of the 'flattened' glue deposits. How about this for a different approach[es] in explaining your method for removing caps from your board? * George Verboven has speculated here on SMTnet that the downward fo
Electronics Forum | Thu Jun 22 10:23:14 EDT 2006 | cuculi54986@yahoo.com
I'm no AOI expert by any means, however I spent a few minutes one time about 4 years ago working on an old CR Technology (or is it CR Technologies?) machine so I've been chosen by my company to be the "technical guy" for our AOI evaluation. We are l
Electronics Forum | Thu Aug 06 09:51:20 EDT 1998 | Bob Willis
This text may be of interest to any one with tin lead spots Guide to Solder Spots - A New Plague in Manufacture ? So what are solder spots ? They appear to be the next big problem in modern reflow assembly in fact in any process that involves solder
Electronics Forum | Tue Jul 18 18:53:23 EDT 2006 | Mike F
Is it showing up after wave or reflow soldering, or after hand soldering? If the delamination or blister bridges between traces you have the potential for a short circuit between those traces. A delamination might be repairable, but in most cases i
Electronics Forum | Mon Aug 04 16:20:35 EDT 2008 | patrickbruneel
After analyzing the pictures I don't think the solder balls are caused by the solder mask. If the problem would be solder mask related the solder balls would only show up on the solder mask but there are also solder balls on the plastic tabs. To me i
Electronics Forum | Tue Jun 13 04:20:21 EDT 2006 | Grant
Hi, ok, I have a bit more info after playing further with the profiling. We are getting close, but we don't have enough top side heat I think. The IR lamps just don't give enough, but we can get better connector that should help. But we have anoth
Electronics Forum | Wed Sep 29 23:54:07 EDT 1999 | Dreamsniper
Hi everyone, Greetings! I�ve got a 2-layered through-hole PCB�s having the following problems: Solder Mask peels after wave soldering at random locations and only at the bootom side of the PCB Insufficient Solder and some solder never make it to t
