Electronics Forum | Tue Jan 04 10:40:41 EST 2011 | johanhuizing
Hello Piter, I don't know which type of HASL we will be using, we decided to do some test and I have to decide together with two other people which material we will try. Searching on the internet i discovered that it's not so easy to find a good sol
Electronics Forum | Mon Sep 17 05:48:10 EDT 2012 | stivais
Hi Ben, Yes, this could be the reason but have you ever seen solderability issues for (new) boards with LF-HAL surface finish? I have seen this only if there are surface finish quality issues for bare boards (exposed copper etc.). In this case we di
Electronics Forum | Tue Sep 18 21:48:26 EDT 2012 | vergara1
Sorry. I don't see any solder balls. > > To me, it > looks like the solder wetted the pad and then > pulled back. It's called dewetting. It's a > defect. Ask your supplier for a SEM analysis. I'm > interested to know what he / she says. I see
Electronics Forum | Tue Aug 31 21:45:49 EDT 2004 | KEN
I have experienced this directly in SMT and wave solder. Fillet lift (can) be a direct indicator to lead enrichment (but its not the exclusive symptom). Lead enrichment in smt joints reduces the interfacial strength shortening the time to creep f
Electronics Forum | Mon Sep 27 22:25:05 EDT 2004 | KEN
Minimal cost and low melting point??? Have you bought Indium or Bismuth based alloys lately? Tin/Silver, Tin silver coper-X you name it....there are trade-offs (cost / performance). Not all are exactly published or are suitable for all appliations
Electronics Forum | Tue Sep 28 19:54:22 EDT 2004 | KEN
If we are talking about Indium...then you will eventually be paying what everyone else is. The resource is diminishing especially with the application into the display markets. Same with silver. We are comming out of an all time low for silver....
Electronics Forum | Tue Sep 28 21:46:49 EDT 2004 | grayman
yes, in the future prices of China product will increase by 10 - 20 percent, but other may increase double. So still China price will stay competative. I am not for China,in fact most of our local companies went to China already, but hey, lets face
Electronics Forum | Fri Oct 01 13:37:27 EDT 2004 | rkevin
Well Thanks for all the good advise. Lots of different opinions on this one. I took the advise to contact my current supplier of solder paste. They sent in one of their tech people along with a sales guy and we ran without much trouble. Other than a
Electronics Forum | Thu Mar 17 10:14:30 EST 2005 | davef
If you're washing the boards properly, you should see any problems, maybe a little extra floaming, but that won't be too bad. If you're running no clean, you need to aplly flux according to your supplier's recommendations. If you decide not to foll
Electronics Forum | Fri Jan 27 17:23:10 EST 2006 | muse95
Watch the solder profiles allowed for these caps. Most electrolytics cannot withstand high heat. Even RoHS compliant Electrolytics are often rated for peak 245C, 3 secs max, for example. Nowhere close to the 260C 10-20 sec you usually like to see.