Electronics Forum | Wed Mar 08 18:56:20 EST 2006 | jsloot
Several weeks ago, there were some postings about a new product for reducing dross in the wave solder pot. It was, I think, a liquid. Both for Tin/Lead and lead free solder. Anyone remember who this vendor is?
Electronics Forum | Mon Apr 03 13:51:31 EDT 2006 | reg
When using lead free bgas and tin lead paste is almost certain that you will find voiding no matter what type of profile is use. The best thing that you can do is optimize your profile to minimize the voiding.
Electronics Forum | Thu Sep 07 10:39:34 EDT 2006 | vicknesh28
Can u elaborate on the bad plating? Have u had any experience on this before? The component has 90/10 Tin lead plating
Electronics Forum | Thu Dec 07 15:12:41 EST 2006 | samir
Patrick, What's the latest buzz over the pond? Is the EU forming a committee to "re-think" this hole RoHS deal - and (wishful thinking) - cancel the whole thing and let everyone start soldering with good ol' tin/lead again?
Electronics Forum | Thu Jan 25 16:58:53 EST 2007 | wagoner
We are using tin-lead solder. The components could be lead free components, they probably are. I will check the plating on the components and investigate changing it.
Electronics Forum | Fri Jan 26 09:49:53 EST 2007 | dyoungquist
You should have no problem using lead-free components with tin-lead solder. Is your reflow oven IR or hot air? If you are using an IR oven and the components are white or light colored, they may not be heating up enough for the solder to flow on
Electronics Forum | Thu Mar 01 11:47:20 EST 2007 | Wagoner
Run the lead free BGA side first. Then run the tin lead side second. We do this on some boards so that we don't overheat the components on the second side. There is no reason that the lead free solder needs to reflow on the second pass.
Electronics Forum | Fri Mar 02 11:44:51 EST 2007 | sueph
Dave, our facility does only military and aeorspace contracts, we still use only tin/lead solder and 186 Rosin Flux, so this info is just what I need. Thanks for your imput.
Electronics Forum | Tue Apr 24 17:39:05 EDT 2007 | Cmiller
I would not really say green, but muddy, yes. It does not look like tin/lead dross. You should not see it on you solder joints though.
Electronics Forum | Mon Jun 18 14:46:24 EDT 2007 | ck_the_flip
I have heard that with lead free soldering, the cooldown phase is NOT as critical as it is for Tin-Lead. -2�C per second cooldown is good enough to form a good solder joint with good grain structure.
