Electronics Forum | Mon Jul 17 08:49:02 EDT 2006 | russ
Hi Paul, not to throw a wrench in here but I beleive that paople are talking about switching from SAC in wave to SN100C, NOT SACx, these are different. and should not be confused. SACx is supposed to fall somewhere in the middle of the SN100C and t
Electronics Forum | Thu May 29 17:19:51 EDT 2008 | dyoungquist
On 0402s we use 20x25 mil pads with a 15 mil gap between the pads on the pcb with ENIG finish, 5 mil stencil with a 1:1 aperture (20x25 mil) and SAC305 lead free solder paste. We very rarely see any tombstoning on 0402s using this setup.
Electronics Forum | Fri Mar 16 08:01:53 EDT 2007 | ck_the_flip
SAC coated leads on certain components require more dwell time. If you find that you have top-side wetting issues, slow the conveyor down a bit or increase your wave height, or, a combination of the 2.
Electronics Forum | Wed Dec 05 11:11:30 EST 2012 | eniac
SAC305 - it's just a metal composition of solder paste. All properties of solder paste depend on chemical composition of flux and other components - I don't know their names in English, sorry.
Electronics Forum | Thu Nov 15 10:19:05 EST 2012 | davidmercader
Hi, We have problems with our wave soldering process. The problem is that during the same assembly, after wave soldering, some pcb’s look not clean and other pcb’s look good. We use lead free SAC305 solder and flammable flux. We think our proces
Electronics Forum | Tue Jan 11 19:47:58 EST 2011 | sai
Use the Kester solder paste EM828 SAC305. Guarantee good reflow. Peak@250 Reflow@80s Soak@75s.
Electronics Forum | Fri Jun 22 21:07:08 EDT 2012 | tank1266
I have had Selective issues such as yours on two very different Selective Solder Machines. I was able to eliminate these issues by using Alpha EF-9301 wave flux with any SAC305 solder. It's a more aggressive flux, but really made the difference. Anot
Electronics Forum | Thu Jan 12 04:14:17 EST 2006 | Rob
The most prevailent wave solder machine in small to medium UK companies is the Blundell CMS400 - every man and his dog has one. And the recommended lead free solder for these machines is..... Greg's 0.3% Silver. Quite a few of our customers use h
Electronics Forum | Wed May 02 02:41:30 EDT 2007 | May
Of course it is needless to say the performance of SACX0307 is worse than SAC305, and also to some other lead free solders,eg SN100C & SCS7.
Electronics Forum | Mon Mar 17 04:31:52 EDT 2008 | d0min0
Hello, tried searching the SMTnet archives, but not yet a clear answer - maybe there is not a one yet ? ;) last discussion I found is few years old so maybe there is a fresh view on that? Q: we want to prove that our proces is "clean" we use SAC30
