Electronics Forum | Fri Nov 25 05:16:44 EST 2016 | slavek
Hello, I want to ask on suitable temperature profile for PCBs with ENIG final surface finish. I know that it is complex question with many unknowns. When the PCB will be standard 1,5 mm 35/35 Cu and the amount of components will have any influence o
Electronics Forum | Fri Nov 25 20:57:30 EST 2016 | sarason
You guessed right. Not hot enough to get good reflow. regards sarason
Electronics Forum | Wed Apr 21 11:33:20 EDT 2004 | tigerlordgm
As one of our small batch processes, we place BGAs on PCB without using solder paste. We apply tacky flux to a predetermined height on a pallet, "dip" the BGA into the tacky flux to wet the solder balls to the set height, and then use a BGA rework st
Electronics Forum | Mon Aug 26 20:33:50 EDT 2002 | davef
Not as such. Generally, people tailor their profiles to produce glam solder connections on their boards. Search the fine SMTnet Archives for discussion on the factors affecting solder reflow recipes. What is the best way to get these PCB made to s
Electronics Forum | Mon Jan 31 16:59:22 EST 2005 | frankracine
Hi Jay, Concerning you PCB, what TG do you expect to use for your lead free process? On my side I have a problem. I order PCB from Canada and from China. My PCB vendor in china is producing a lot of OSP and ENIG PCB, no HASL lead free and in Cana
Electronics Forum | Fri Jun 06 07:23:18 EDT 2003 | johnw
Hi Kevin, the profile doesn't actually qualify something as lead free or not it's purely the Pb content of the assembly that does this. Currently the understanding of the limitations of the lead in the jont is 0.1% by weight or less. So as long as y
Electronics Forum | Wed Mar 21 20:02:37 EDT 2012 | hegemon
Lead Free in 5 zones is tough sledding. Start with your manufacturers solder reflow profile and calculate your belt speed by looking at the recommended heating time for the solder paste vs. the length of your heated zones. Set your belt speed so tha
Electronics Forum | Mon Jul 12 13:24:38 EDT 2010 | tate350
Like robdg3 said, just check your paste spec and define your reflow profile accordingly. There should not be any major difference in reflow profile due to PCB finish.
Electronics Forum | Fri Sep 22 12:37:18 EDT 2000 | jonyoder
I am having problems with SMT electrolytic capacitors expanding and changing values after going through our reflow. The reflow profile we use includes temperatures of 200 deg C for 60 seconds and 230 deg C for 30 seconds. We need to use this profil
Electronics Forum | Fri Dec 08 19:09:44 EST 2006 | darby
I have just started production run using this component. After reflow I see that there is an undercut of solder between the pcb and the lead instead of a fillet. This means that some of the leads are sitting above the solder with no wetting to the co
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