Electronics Forum: leaching (Page 1 of 16)

Tin leaching / lead terminal discoloration on Pb-free

Electronics Forum | Thu Jul 27 07:50:35 EDT 2006 | davef

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Tin leaching / lead terminal discoloration on Pb-free

Electronics Forum | Mon Jul 24 11:35:42 EDT 2006 | Jimk@ics-inc.org

We have experienced a problem with tin leaching or discoloration of lead terminals on random parts on solder side of a paste/paste operation. The profile has been used on previous production runs and there doesn't appear to be any heat damage to othe

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

Leaching

Electronics Forum | Fri Apr 25 14:56:40 EDT 2003 | razor

Please explain the phenomenon of solder leaching on SMD end caps. What is the root cause? What is the best control method?

Re: Surface Mount assemblies IPC Standards

Electronics Forum | Tue Jun 29 18:35:59 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 liquid solder. Nickel ba

Re: Surface Mount assemblies IPC Standards

Electronics Forum | Thu Jul 01 16:43:52 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.

PASTE LEACHING

Electronics Forum | Wed May 03 13:06:54 EDT 2000 | Sal

GUYS SEEING A PROBLEM WITH SOLDER PASTE LEACHING. THE PCB IS HASL FINISH , AND THE DEVICE IN QUESTION IS A O.O30" PITCH RESNET. THE SIZE OF THE PADS ARE 0.020 x 0.0.047 THOU , THE APERTURE SIZES ARE 0.018 x 0.042 THOU . THE LEACHING IS OCCURING DUE

Re: PASTE LEACHING

Electronics Forum | Wed May 03 20:19:31 EDT 2000 | Dave F

Sal: Sorry, sometimes (more often than I�d like to admit) I�m a bit dense. But first � Leaching. Dissolution of a metal coating into liquid solder. Leaching applies to liquid solder and is applied inaccurately to metallurgical effects, like diff

Leaching

Electronics Forum | Fri Apr 25 17:03:34 EDT 2003 | davef

Leaching. Dissolution of a metal coating into liquid solder. Leaching applies to liquid solder and, at times, is applied inaccurately to metallurgical effects, like diffusion, that occur after the solder has solidified. Please help us understand y

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