Electronics Forum | Fri Oct 02 11:23:08 EDT 2009 | floydf
Does anyone out there have experience soldering > with Pb solder (Sn 63 or Sn 62) to SAC 305 coated > PCB lands (about 50um) or Sn-Cu plated lands > (about 10um). I know soldering Pb free (Sac based > soler) to Pb/Sn coated lands is a no-no, but
Electronics Forum | Tue Feb 27 11:01:37 EST 2007 | ratsalad
Larry has lots of experience, if you have been around the forum for a while you may remember some of his other suggestions. Now I wish I had asked the question before jumping in to Pb-free 1 1/2 years ago. We've been using the same ovens to run bot
Electronics Forum | Thu Jan 19 14:43:08 EST 2006 | jeffharley
So as far as pb free compliance in EU there would be no residuals from pb on the pcb's to speak of. We also have deionization cabinet with chealate filter for heavy metals that recirculates the wash water.
Electronics Forum | Mon Oct 05 18:53:08 EDT 2009 | smt_guy
this is what they call hybrid soldering....i missed the discussion at the IPC Show in Chicago... Can someone with hybrid soldering idea share some? thanks
Electronics Forum | Thu Oct 15 09:00:46 EDT 2009 | kudamarani08
This may help...http://www.numonyx.com/Documents/WhitePapers/WP_Soldering_Compatibility.pdf
Electronics Forum | Fri Dec 08 21:23:16 EST 2006 | Harsha
I am seeing a problem of flux droping on the PCBA during reflow. This is a pb free process and I am using KOKI pb free paste with 8 zone (and some 9 zone) reflow ovens. Line throughput is about 10,000 boards/24 hours. I suspect that the exhaust is no
Electronics Forum | Mon Nov 08 11:00:53 EST 2004 | davef
It's possible your supplier has not thought through the results of their conversion to lead-free throughly. We'd expect something like: Reflow Parameters||Pb Assy||Pb Free Peak Temp.||235�C �5�C||255�C �5�C Time Within 5�C Peak Temp.||20 to 40 sec.|
Electronics Forum | Thu May 13 16:55:51 EDT 2021 | emeto
With Pb-Free HASL you can't use Pb process for sure as the melting point of tin is so much higher than the lead paste process. SAC305 is the most popular compound, unless your assembly requires something else for a specific reason.
Electronics Forum | Mon Jul 16 10:51:09 EDT 2007 | patrickbruneel
D. Hillman, et al., �The Impact of Reflowing a Pb free Solder Alloy Using a Tin/Lead Solder Alloy Reflow Profile on Solder Joint Integrity,� International Conference on Lead-free Soldering, CMAP, Toronto, Ontario, Canada, May 24-26, 2005, http://www.
Electronics Forum | Wed Apr 26 01:18:33 EDT 2006 | ge_lim
Hi We are in the process of developing a lead free product to be used in a non lead free selective soldering machine, i do have concern in these, and hope you guy can share your experienced expert opinion: 1. What does it take to convert to lead fre
