Electronics Forum | Tue Apr 03 22:03:18 EDT 2001 | davef
With friends like you, who needs enemies? I�d guess that the perceived benefits of flat pads for your 20 mil pitch and below components counter-balance the higher cost, gold being a solder pot contaminant, limited solder mask compatibility, potentia
Electronics Forum | Mon May 14 17:14:07 EDT 2001 | davef
First, consider checking the fine SMTnet Archives. Look for threads on "white tin", in addition to "immersion tin". We�ve had a cuppla good ones of late. Merix [http://www.merix.com] gives a good comparison of different solderability preservatives
Electronics Forum | Fri Jul 18 10:46:43 EDT 2003 | davef
If you are saying that you have discolored white tin at in-bound inspection, you have bad boards. The boards are fabricated incorrectly. Your fabricator is deficient. That is the GREAT thing about imm coatings. You can look at them and determine
Electronics Forum | Wed Jul 12 21:47:41 EDT 2000 | Dave F
Celiav: Mark is probably spot-on on his comments about a board fab problem. It is weird that you have similar problems from two suppliers though. Recommendations are: � Get rid of any bird brain contractor that installs processes that affect your
Electronics Forum | Thu Jan 27 16:43:15 EST 2005 | russ
Ther is a solder alloy out there that is supposed to allow lead free wave processing without having to upgrade pumps and such or increasing the pot temp (direct drop in). I have not used it nor do I plan on doing leadfree wave soldering but you may
Electronics Forum | Mon Apr 26 11:04:53 EDT 1999 | Dave F
| | Earl said, in essence: | | | | | Justin is absolutely right ... | | | | | | Again, Entek is not much more than a flux coating ... | | | | | | Metallic coatings protect best, as we all know - especially those electroplated. Those coatings chemi
Electronics Forum | Mon Apr 26 17:45:26 EDT 1999 | Earl Moon
| | | Earl said, in essence: | | | | | | | Justin is absolutely right ... | | | | | | | | Again, Entek is not much more than a flux coating ... | | | | | | | | Metallic coatings protect best, as we all know - especially those electroplated. Those
