Electronics Forum | Mon Apr 29 10:42:47 EDT 2002 | Jim M.
I had problems with white residues on both WS609 and WS 3060.The WS 3060 turned out to be a carbonized material.The composition after analysis (Energy Dispersive X-ray spectrum) turned out to be tin,tin,phosphore and cloline and tin. Alpha also have
Electronics Forum | Fri May 24 07:09:52 EDT 2002 | Andy Hoggan
Teh amount of silver on an immersion silver board won't effect 62/36/2 tin/lead/silver solder, however if the silver on the board is on the thick side and you have a high trace silver content in a 63/37 tin/lead then with the combination of the two y
Electronics Forum | Mon Dec 22 19:43:43 EST 2003 | Dean
I have seen this affect on Immersion Tin and OSP. 70 to 90 % of the solder wicks to the lead and forms a "single" homogenous solder mass. This even though the pad was 100 % covered with paste... Evaluated different solder paste...did find variatio
Electronics Forum | Tue Feb 01 09:54:23 EST 2005 | jbrower
Hi Frank, we're still going to go with FR4 as our prefered material. Our board thickness is .062. We use an on shore and off shore vendor. Prototron I believe offers an immersion tin and excellence in china? offers an immersion tin finish. We fou
Electronics Forum | Mon Apr 18 12:28:33 EDT 2005 | davef
We've never heard of it either. Stained glass widow people use varous types of copper and brass tape / foil in their work. A widely used suppler of this tape is Venture [ http://www.venturetape.com ]. They may be able to help. We're not sure how
Electronics Forum | Thu Sep 08 06:19:55 EDT 2005 | lupo
Hello, Could anyone provide some support concern issue with vertical fill of through hole solder. Our lead free wave soldering process is not capable to fill 100% (requirement of our customer)through hole. We made everything (DoE) - different amoun
Electronics Forum | Tue Dec 13 14:55:12 EST 2005 | muse95
Your response is from the point of view of using a Bismuth solder with Pb plated leads. Samir's point of view is from Bismuth in the plating on the leads being used with a Pb solder. There is a very large difference in the amount of Bi that will en
Electronics Forum | Fri May 12 11:40:25 EDT 2006 | solderiron
If you can change to SN100C do it. The nickel prevents the high tin content from eating away at the metals on the tips. Similar to what the Lead did in 63/37 alloys. This Koki crap is just that, crap. 99% tin??? Thats what is causing the problem peop
Electronics Forum | Tue Jun 20 19:15:19 EDT 2006 | grantp
Hi, What are your thoughts about the article saying that the lead will leach out of the solder joint to the last place to cool, creating a weak point? I have two worries about the report. First, is that we have always used tin lead solder, and le
Electronics Forum | Fri Nov 17 19:28:36 EST 2006 | rob@spinpcb.com
What kind of board finish do you have? You describe solder bubbles...and when you remove them, you find open vias. Are you, by chance, discovering flux contained in these bubbles? We've been experiencing the same thing with pb-free soldering on a
