Electronics Forum | Tue Oct 25 11:48:03 EDT 2016 | dontfeedphils
Hi, we're currently running a design with a fairly simple BGA. The problem we're running into is poor solderability (cold looking joints, high voiding in the BGA). All of this on a know good oven, with a known good thermal profile. I'm guessing it
Electronics Forum | Sat Jun 10 00:43:34 EDT 2006 | mika
Dont't bother to answer real idiots! I can relate to a similar problem. We also use SN100C alloy and the solder pot get(got?) contaminated with the alloys from the SAC305! How can this be? Strange thing happens during the soldering process, and it o
Electronics Forum | Fri Feb 05 14:39:50 EST 2010 | gregcr
Hi All, We evaluated and approved KESTER R520A for our default RoHS solder paste a couple years back. It's time to re-evaluate to see if this material is still the best choice. Please let me know your opinion on the solder paste you are using, and
Electronics Forum | Fri Feb 03 16:40:24 EST 2006 | Mike
At my last employer, we ran a number of tests to make a "Hybrid" profile work (same profile Joe lists) . It worked great for everything but BGAs. The problem (6 months ago) was using parts not rated for lead free reflow temps. As the market fills wit
Electronics Forum | Tue Jan 10 12:17:17 EST 2006 | Rob
Hi, The ROHS compliant parts are usually Matte Tin on the outer terminal plating. There are also 2 further types of metal on the average chip cap - the undercoat metal of the outer electrode & the inner electrode. These are usually the same & are
Electronics Forum | Mon Jan 29 09:50:37 EST 2007 | rgduval
I'm about to begin a job for a customer placing a couple of lead free BGA's/FPGA's on an assembly that doesn't need to be RoHS compatible. So...my question is...should I process this assembly with lead-free solder paste, to accomodate the lead-free
Electronics Forum | Thu Sep 11 20:32:08 EDT 2008 | diesel_1t
I know that most of the problems are called solder issues, this is why i put "solder related" quoted because i have seen more than usual "solderability issues" posted on this forum lately. I had a tombstoning issues with 0603 resistors, on some mat
Electronics Forum | Mon May 15 05:17:18 EDT 2006 | Rob
Hi Patrick, Sorry, wrote it in a hurry on Friday afternoon, I meant show us evidence of a scientific trial on all or at least some other alloys. I accept Tin whiskers and other similar phenomina exist, I even accept that the whole ROHS directive
Electronics Forum | Thu Apr 19 08:50:38 EDT 2007 | rgduval
Welcome to RoHS. Or, at least, to the version of RoHS that I've had to deal with since I started with my current company. Blowholes and pinholes seem to be common in PB-free manufacturing. At least, they have for me here. I also note that IPC has
Electronics Forum | Tue Jul 20 12:49:38 EDT 2004 | mmjm_1099
We are having a problem with our Heller 1800W oven with certian parts skewing. It seems that some inductors and taller Can caps are shifting around in the oven. It seems it will solder fine and than all of a sudden just be off to one side or the othe
