Electronics Forum | Tue Sep 26 08:42:49 EDT 2006 | aj
me and my big mouth. we are currently running a leadfree product and I am getting MCSB on all 1210 caps. Using homeplate with 10% reduction 6thou stencil. I contacted my stencil supplier to ask for advice- they are looking into it but he did menti
Electronics Forum | Tue Sep 26 12:01:30 EDT 2006 | sliebl
We have solved our MCSB problems by using standard homeplate designs on all of our resistors and caps. I use a 50% taper and have achieved great results with 0402-1206 parts using both tin/lead and SAC305 paste. We use Amtech paste.
Electronics Forum | Fri Sep 22 13:15:19 EDT 2006 | jaimebc
We are currently experiencing some MCSB's on 0603 components. I am looking into experimenting with the stencil thickness from 6 mil to 5 mil and also using Radiused inverted homeplate ( 20%60%20)to eliminate or reduced this problem. We are using lea
Electronics Forum | Mon Sep 25 16:31:41 EDT 2006 | SWAG
We are just getting into full production on a handful of lead-free builds. We are finding that the specific lead-free paste we are using is very susceptible to shelf life and dwell time. Much, much more than our experience with leaded. We have had
Electronics Forum | Tue Sep 26 03:48:25 EDT 2006 | aj
Have you tried an alternative paste supplier. I have ran quite a few cards now with the homeplate design that I have used for the last few years and we are not experiencing any problems. We experienced MCSB on one product but this card has oblong p
Electronics Forum | Thu Oct 05 12:35:38 EDT 2006 | Mario Scalzo, SMT CPE
Good afternoon! We are able to offer some insight into this and fix your issues. A lot of the time, we are able to offer relief from MCSB using profiling. We have a Technical Paper and Application Note for the elimination of them. They can be fou
Electronics Forum | Tue Apr 28 19:20:53 EDT 1998 | Steve Gregory
| We want to produce BGA�s which will be see burn in conditions | of 140�C / 24h active tested. | Now we think about problems for the solderball uniformity. | Does anybody know about problems or about special solderball | alloys for such productscon
Electronics Forum | Tue Nov 28 17:43:03 EST 2006 | IRAS
I'm looking to gain some knowledge on potential causes of solderballs on LGA's and advice on how to eliminate them. we all seeing some solderballs on only the edges of the LGA. Any inputs will be greatful.
Electronics Forum | Thu Feb 21 03:43:49 EST 2002 | madreindeer
David, I can say this we have 2 vision systems Orbotech and Omron. Both working OK but there is a problem with both....They find a solderballs in board and there is no solderballs! Otherwise can not tell what is a best system. Regards, MadReind
Electronics Forum | Sun Mar 19 15:50:14 EST 2006 | ausajid
hi any body can help reducing/completely finishing of solderballs / solderbeads after reflow on surface mount. i will be appreciated upon suggestions and techniques. regards
