Electronics Forum | Thu Dec 19 12:08:01 EST 2002 | davef
Facts!!! I got facts. Mechanical strength experiments of Sn43/Pb43/Bi14: �Microstructural And Mechanical Characterization Of 43/43/14 Tin/Lead/Bismuth�; J. Marshall, J. Calderon, J. Sees; Soldering And Surface Mount Technology; 10/91, p25-27 Look
Electronics Forum | Mon Mar 06 22:30:12 EST 2006 | mainenetservices
We have a customer transitioning slowly to lead free due to necessity rather than a need to comply i.e. some of their BGAs can only be purchased Pb free only. So for this we would want to produce them a leadfree soldered PCB (not necessarly RoHS comp
Electronics Forum | Wed Jul 19 16:20:34 EDT 2006 | dave
kris, Thats what I said when the rep. advised me. But I had called him in to advise me on some problems I was seeing on a certain boards. When we ran at this elevated Temperature "bingo" the results were perfect. So as you know yourself wrt wave pro
Electronics Forum | Thu Sep 27 17:25:33 EDT 2007 | chef
The short answer is immediately after reflow the problem occurs. To be more exact, what you are describing is not "rust". Rust occurs in iron. The oxidation that occurs in Tin-Lead has been sometimes called "white rust". Either way, oxidation occur
Electronics Forum | Fri Feb 20 20:33:16 EST 1998 | Steve Gregory
The biggest difference between the two, is solder joint appearance. What I noticed mainly is that the solder does not wet and flow as readily to a palladium coated lead as it does with a tin/lead coated lead. When you look at a palladium coated lead
Electronics Forum | Tue Feb 08 11:09:44 EST 2005 | jdumont
Hi all, we're preparing for the switch to lead free and I was wondering how dangerous/harmful to our new wave oven it would be to run tin lead parts through the no lead wave. Will the lead build up and cause issues?
Electronics Forum | Mon Dec 11 20:44:37 EST 2006 | davef
Title : LEAD-FREE WAVE SOLDER FLUX EVALUATION Author : Michael Havener Author Company : Benchmark Electronics, Inc Date : 09/25/2005 Conference : SMTA International Abstract : The European Union�s deadline to ban lead in electronic pr
Electronics Forum | Wed Aug 30 16:00:42 EDT 2000 | Dave F
Russells: You can mix the two solders you mentioned, assuming by "96s" you meant "96Sn / 4Pb". If you heat the two tin / lead alloys to a liquid state, you�ll form a tin / lead solution with properties different from either of the two solders. The
Electronics Forum | Wed Jun 30 10:37:11 EDT 1999 | Boca
We are wave soldering some fabs with a lot of unmasked trace area along the edges. The trace area is solid copper covered with tin / lead, no masking, no components along the edges, same on solder side and component side (goofy board design). Inste
Electronics Forum | Tue Apr 13 09:11:54 EDT 1999 | Dave F
| We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have to
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