Electronics Forum | Fri Jun 06 10:47:27 EDT 2003 | Marc Peo
Kevin, Agree with John's thoughts on profiling and the max temp of 240 degrees in particular. To add to it a bit we have seen the following parameters put in place at many assembly houses to protect against overcooking the components: --Time above
Electronics Forum | Sat Jun 07 00:21:50 EDT 2003 | kevyeoh
J-STD-020 Moisture/Reflow Sensitivity Classification for Non-Hermetic Solid State Surface Mount Devices. There's a profile for Lead Free and another for normal Sn/Pb.
Electronics Forum | Fri Jun 06 07:15:28 EDT 2003 | davef
Which specific JEDEC standard are you talking about? It's very peculiar that JEDEC would publish such a standard.
Electronics Forum | Fri Aug 27 11:57:49 EDT 2004 | Dreamsniper
REFLOW SOLDERING PROCESSES AND TROUBLESHOOTING: SMT, BGA, CSP AND FLIP CHIP TECHNOLOGIES By Ning Checng Lee http://www.argospress.com/Resources/business/book-0750672188.htm regards,
Electronics Forum | Wed Jun 11 17:16:12 EDT 2003 | MA/NY DDave
Hi I had to poke around awhile to see what you meant. I think you were at an advanced level where IF he knew the MSL ratings of his devices he should constrain his profile within the component mfgs tests for exposure to various profiles, or at leas
Electronics Forum | Fri Sep 07 12:19:20 EDT 2007 | guqing
We are having problem to develop lead-free (SAC305) reflow profile for big SMT electrolytic caps. The delta T of the joint of the cap with the rest of the board is too big to fit in the tighter lead-free window. Any suggestions regarding the total pr
Electronics Forum | Fri Jun 06 22:10:11 EDT 2003 | MA/NY DDave
Hi John I believe gave a good answer with cautions. The .001 or .1% is the main criteria that internationally means you are Lead-free per JEITA, the EU and NEMI. They sat around at a table and decided is how they got the .1% John did note that yo
Electronics Forum | Wed Jun 11 10:24:23 EDT 2003 | kris
Hi, The percentage of lead (0.1% or otherwise) is still being debated in the EU where the legislation is in place. The industry is pushing for a 0.2% limit,(if lead-free has to be) as it is considered a limit where solder can be recycled economical
Electronics Forum | Wed Jun 11 16:55:16 EDT 2003 | MA/NY DDave
Hi Yes Thanks, I understand that there are still some arguments going on in the EU and some companies like Phillips AG, I believe, are championing changes. Even so from what I know the combined JEITA/European (Soldertec) /USA NEMI task group is sti
Electronics Forum | Fri Jun 06 04:52:21 EDT 2003 | kevyeoh
Hi all, I am just wondering is there any other Lead Free Standard Profile for IR reflow besides the standard provided by Jedec ? What if the profile that i use is different from the one provided by jedec ? Lets say the peak temperature for Jedec is
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