Electronics Forum | Thu Jan 12 22:51:12 EST 2006 | davef
We think if you follow your suppliers instructions, you should be OK. Why not have your quality people rip a couple of the soldered heat sinks from the board to assure themselves that your soldering process is adequate? Give them a pair of pliers a
Electronics Forum | Tue Jan 31 15:44:08 EST 2006 | John S.
We're looking at lead free surface finishes for some of our products. On one supplier's site, I found a note that tenting vias on ENIG boards can lead to the black pad phenomenon. How does this compare to your design guidelines and experience? Than
Electronics Forum | Wed Feb 01 14:31:03 EST 2006 | John S.
http://www.saturnelectronics.com/docs/Getting_the_Lead_Out.pdf This is a document provided by one of our suppliers discussing lead free PCB considerations. Within the document, it mentions black pad being associated with tented vias. Thanks John S.
Electronics Forum | Wed Feb 08 08:49:46 EST 2006 | russ
Most distributors (well maybe not but ours do) actually have that information. i would think that the metal suppliers would also have metal pricing trend info.
Electronics Forum | Mon Feb 13 12:14:13 EST 2006 | davef
Some low residue [no-clean] flux residues are cleanable, others are not. Talk to your paste supplier for a recommendation of cleanable low residue flux.
Electronics Forum | Mon Feb 20 15:24:50 EST 2006 | davef
cmiller The materials suppliers mentioned above (eg, Dymax, Loctite, Permabond) have applications types that will recommend products to meet your requirements.
Electronics Forum | Wed Feb 22 08:45:33 EST 2006 | jdengler
The generic name for these is Hairpin Clip. Get the dimensions you need and buy them by the hundreds from a hardware supplier. Jerry
Electronics Forum | Mon Feb 27 16:37:57 EST 2006 | davef
Options are: * Find a low residue flux and conformal coating material that are compatable, so that cleaning is not required. * Use a cleanable low residue flux, clean according to the supplier's recommendations, and then coat boards.
Electronics Forum | Thu Mar 02 16:33:53 EST 2006 | russ
Your best bet would be to browse through you current solder suppliers catalog and pick your alloy. Most of them have a list of alloys and their melting points as well as what form they can be supplied in.
Electronics Forum | Fri Mar 10 07:47:09 EST 2006 | aj
Guys, Just to let you know, I followed the recommendations from the supplier and we have very nice solder fillets now. Thanks for all your help.
