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 | Sun Dec 17 18:14:12 EST 2006 | greg york
circuitmaster designs prowave is unbeatable. They may have an agent in the usa if interested I will try to find out for you. cheers greg
Electronics Forum | Tue Dec 19 10:08:10 EST 2006 | George
Grant, Why don't you try a water-base flux which is No-clean, VOC-free also? I have tried the 270WR flux from AIM with good results even on lead-free process. My $0.02, George
Electronics Forum | Tue Dec 19 12:01:29 EST 2006 | patrickbruneel
Here�s a link to a previous thread that might be helpful http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=6947&#Top Look what KEN has to say on the subject Patrick
Electronics Forum | Fri Jan 27 09:48:26 EST 2006 | patrickbruneel
GS UPS are exempt for 2 reasons: A. Lead in solders for servers, storage and storage array systems, network infrastructure equipment for switching, signaling, transmission as well as network management for telecommunications. B. The primary functi
Electronics Forum | Fri Feb 17 11:01:47 EST 2006 | amol_kane
with lead-free solders, one would expect to find less instances of tombstoning. this is because SAC alloys are not eutectic and melt over a range of temp (usually 217-220 deg C) instead of at a single temperature. therefore the forces due to solder s
Electronics Forum | Fri Mar 03 14:40:22 EST 2006 | amol_kane
i think a more important issue here would be the reduction ratio. as LF solders have a higher surface tension, they do not flow as well as their leaded counterparts. therefore the stencil design may have to be changed (hence a new stencil) if the red
Electronics Forum | Tue May 09 14:49:57 EDT 2006 | Larry
Hey guys, Anybody having trouble with increased false contact issues in ICT after switching from lead to lead free? Our test guys keep trying to imply that the flux residues are a problem (we're using Alpha EF2202), but as the soldering process eng
Electronics Forum | Tue May 09 18:00:33 EDT 2006 | russ
in all actuality, you are both right. Alpha metals does have the toughest/hardest noclean residue that I have seen. When changing to no-clean FLUX you should run different probes. So back to square one. You're both right so who's gonna win?
Electronics Forum | Sun May 28 23:01:31 EDT 2006 | jacksaria
Hello to all, We are encountered many problems/defects in SMT lines.I would like to know your suggestion or recommendation for SMT optimization and improvement. What are the step by step solutions in order to optimized and to improve the printer, pi
