Full Site - : solder leach (Page 5 of 14)

Re: SMT Chip terminal lifted

Electronics Forum | Thu Jan 20 11:20:28 EST 2000 | Brian W.

It sounds like what you are seeing is leaching of the end cap. You need to check the manufacturer's spec. Many components have terminal barriers, which get a solder plating. Sometimes this plating process is not done well, and the solder plating le

Tombstone/ Poor welting

Electronics Forum | Wed Feb 20 16:55:52 EST 2008 | flipit

Pd/Ag doesn't usually dissolve (leach) nearly as bad as Ag only. In my hybrid days, we would use 62/36/2 solder. The 2% silver helps saturate the solder joint and thus keep the Ag from being leached away by the Sn.

Re: Surface Mount assemblies IPC Standards

Electronics Forum | Tue Jun 29 16:09:44 EDT 1999 | Dave F

| Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | Roberto: Leaching, according to the SMTnet Library of Terms: Leaching. Dissolution of a metal coating into liquid solder. Nickel barrier unde

Re: Surface Mount assemblies IPC Standards

Electronics Forum | Thu Aug 26 10:03:17 EDT 1999 | Sal

| | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | Leaching. Dissolution of a metal coating into liquid solder. Nickel ba

Re: Chip Resistor Failure

Electronics Forum | Wed Mar 24 09:04:46 EST 1999 | Dave F

| Your problem may be related to silver migration (leaching) into the solder. I had what seems to be a similar problem. The solution was using solder with 2% silver content. See these pages for a bit more information: | | http://www.ferroemd.com/

RoHS - Chromium

Electronics Forum | Sun May 10 09:29:23 EDT 2009 | davef

Q1: Can I know is Chromium restricted from RoHS? A1: RoHS Restricted Substances (Pb, Hg, Cr6+, PBB, PBDE, Cd) Q2: Is this chemical will effect the content of Lead free solder? A2: It's possible that the metals that comprise the stainless steel probe

pb free component leads

Electronics Forum | Thu Feb 17 12:04:52 EST 2005 | Indy

Have you tried doing solder dip test on these components? Or a Leaching Test, to see if the solder catches on the termination ? I suggest you should try these tests.. Cheers Indy

SN/PB soldering with gold plated pcb

Electronics Forum | Tue Apr 26 11:22:48 EDT 2005 | denismeloche

I have found that Sn62 solder gives better strength and leach resistance when soldering to gold surfaces. The gold needs to be at least 5 to 10 micro inches thick to prevent nickel oxidation but if over 25 micro inches will cause brittleness. I hav

Sn62 eliminates voids on BGA ?

Electronics Forum | Thu Jan 15 09:04:36 EST 2004 | rkevin

Does anyone have any information about eliminating voids on BGA using SN62 as opposed to the normal Sn63, something which explains the inter-metallic layers which form during the soldering process and the leaching out of silver ?

Re: Surface Mount assemblies IPC Standards

Electronics Forum | Thu Jul 01 16:57:14 EDT 1999 | JohnW

| | | | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | | | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | | | | | Leaching. Dissolution of a metal coating into liqu


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