Electronics Forum | Thu Feb 13 19:08:31 EST 2014 | darby
Have to agree with Sr Tech and Spoilt - you'd have to really mistreat your paste these days for it to be the root cause. However, try another paste to eliminate that; making sure you abide by the suppliers specs. Pad design, stencil design,(includin
Electronics Forum | Fri May 23 19:59:26 EDT 2014 | jhaye
hi everyone, I just got some question with regards to the life span of components from the date it was packed from supplier. Does the parts more than 2 years from the date it was process by supplier: 1. Can it still be used in PCBA?? 2. will it not
Electronics Forum | Fri Apr 04 18:16:43 EDT 2014 | garym4569
We are in the process of launching a new product and found reflow solder issue with one of the inductors. I have set oven profile to paste specifications. I just finished profiling with thermocouple under problem component. All other components ex
Electronics Forum | Mon Jan 30 06:29:51 EST 2006 | slaine
we shouldnt be talking about lead free we should be talking in terms of RoHS compliant. HMP solder is exempt in the directive even though it has a hig lead content (93.5%) as no other alloy will melt at the same temperatures 298. as HMP is exempt wi
Electronics Forum | Thu Aug 04 12:40:38 EDT 2005 | Ted
Hi all, I am wondering what everyone is using as a PCB finish for RoHS. There doesn't seem to be a favorite out there. I know there are many companies using a gold finish but I don't want to pay that much and I have also heard about reliability p
Electronics Forum | Sat May 14 03:56:40 EDT 2005 | Mika
I am interested in RoHS "through-hole soldering": We have a problem with solder wetting and fillet during selective and wave soldering, with a Ni/Au PCBA!! Different fluxes has been tested, but this is really a big issue. Now; there is only a few fl
Electronics Forum | Fri May 08 02:23:15 EDT 2009 | tang
Hi all, Presently, we have loan a thermometer probe from supplier which used to check Soldering pot temperature. But we found that the probe consisted of High CR6+ (Chromium) with reading about 187000ppm. As I know stanless steel consisted this ch
Electronics Forum | Wed Mar 19 12:48:29 EDT 2008 | ratsalad
From what I understand, the major reason Sn prices recently escalated was a crackdown on black market Sn mining in Indonesia, where most of our Sn originates. Add to that increased demand (not necessarily from RoHS, but from China, India, and other
Electronics Forum | Thu Feb 22 16:40:23 EST 2007 | mika
One of our customers that always was going for Ni/Au surface finish on RoHS PCB and our processs was adjusted for that, "whithout any problem". Recently they decided to switch to another surface finsh: PbFree HASL. What is that? Imersion tin/silver?
Electronics Forum | Tue Dec 21 07:18:15 EST 1999 | Nick Harris
Edmund, I agree with Wolfgang there is no reason for 0603s to be falling from the bottom side during the top side reflow. I assume what you are having problems with is a higher mass component like a large tantalum, inductor, or perhaps an active de
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