Electronics Forum | Wed Jul 06 11:14:40 EDT 2005 | Inds
thanks guys for the information.. i am trying out with SN100C and hoping that the Cu will dissolute lesser than SAC305. inds
Electronics Forum | Thu May 25 12:14:07 EDT 2006 | patrickbruneel
Inds, Thanks for the update You can remove the solder with a desoldering pump Do a search and you will find all the different options. Just to be clear on the cu-dissolution Did I understand correctly that you didn't see a difference between the 2 a
Electronics Forum | Tue Jul 05 10:04:59 EDT 2005 | Inds
Hi All, we are running a process where we are wave soldering the PTH components using SAC305 alloy. During rework process (using SAC alloy in the solder pot) we are seeing good amount of Cu dissolution, to an extent that the Cu has completely disapp
Electronics Forum | Wed Jul 06 18:00:38 EDT 2005 | GS
Very interesting, any experience with HASL made by SN100C? Many Tnks. GS
Electronics Forum | Tue Apr 25 16:31:52 EDT 2006 | kris
Inds, Guys Any updates to share on this issue ? Thx
Electronics Forum | Tue Jul 05 11:00:37 EDT 2005 | patrickbruneel
Inds, This will happen with all lead-free alloys having a tin content above 70%. It takes about 30 sec. for a molten lead-free alloy to totally dissolve a copper pad. The higher the temperature the shorter the time and visa versa. The scary part of
Electronics Forum | Wed Jul 06 16:40:05 EDT 2005 | Inds
the problem with using SAC305 is we have a very small window within which the connnector has to be removed.. otherwise Cu will dissolute. Now this process window is something between 20sec to 30 sec..depending at what temperature you are reworking th
Electronics Forum | Wed Apr 26 02:16:18 EDT 2006 | AR
We had x-ray and optical microscopy analyses done on transformers dip soldered with Sn/Pb, SN100C3 and SN100C4 alloys using temperatures 400�C ... 450 �C, with dip times of 2..4 seconds. We found that SN100C4 is at least as good as Sn/Pb 62/38 and SN
Electronics Forum | Thu May 25 08:47:39 EDT 2006 | inds
Patrick, we were seeing a good amount of Cu-dissolution with both SAC305 and SN100C.. couldn't figure out.. till our good old vendors told us that the Cu thickness in the barrel were not correct... but anyway have started some new work with SAC30
Electronics Forum | Thu Jul 07 16:54:41 EDT 2005 | Inds
Yup Pat, even I read that article.. would love to challange them..but can't.. i think the debate on whether to go lead-free or not.will continue ever and ever after.. WE can call it Lord of the Ring-Part 4 created by europeans..
