Electronics Forum | Tue Jan 04 07:22:12 EST 2000 | Michael Selva
One of the boards has a via designed right in the middle of a pad for a 1206 cap, one side only. This causes the solder paste to run into the via during reflow. We run No-Clean paste. One alternative is to increase the aperture on the stencil for tha
Electronics Forum | Sat Feb 03 13:33:30 EST 2007 | Scotty
Anyone out there in the Cyber SMT world have success/experience utilizing conductive adhesives as a substitute for typical eutectic alloys? Application is for a Single sided SMT Process. With a reliability life span of 8 hours. Forum feedback could
Electronics Forum | Thu Jun 22 16:21:42 EDT 2006 | pms
"We certainly live in a better world now." Regarding lead-free solder I assume? If so, then............... Oh god....... Another one sucked into the EU black hole of ignorance. Sorry for the thread drift, couldn't help myself. Hope your parts do
Electronics Forum | Fri Jun 16 16:14:19 EDT 2006 | jbrower
Hi Grant, I can't speak for reliability, I don't know how your boards are going to be used or what alloys you are using. As for RoHS compliancy as far as I understand the cut off if July 1. So any boards sold before that in the EU are OK. Best regard
Electronics Forum | Thu Jun 22 04:25:26 EDT 2006 | emeto
Grant, The best rule is- "If it works don't touch it". What I mean is check your component datasheet. Max allowed temperature should be there. You know the profile of your reflow oven and the temperature reached during reflow. So if there is no conf
Electronics Forum | Tue Jun 20 14:54:02 EDT 2006 | grantp
Hi, That's a really interesting article, however one thing I am a little confused on. They seem to say a Pb-Pb solder joint is almost as bad as a Pb-lead free joint in their results. Are they saying the testing which looks like it cycles up to 125 D
Electronics Forum | Fri Jun 16 18:52:03 EDT 2006 | grantp
Hi, Reliability was what I was worried about. We have not shipped these yet, as we are not sure about reliability. We can ship them in regions outside of the EU anytime so we are ok on that, and because of supply chain delays, we are already shippi
Electronics Forum | Fri Jun 16 18:48:57 EDT 2006 | GS
Hi Grant, just my opinion, I think the concern could be related to the extra temperature the BGAs have been exposed during the Lead Free Reflow Temperature. So you need to check ( data sheet) what is the max temperature and how long the Pb/BGA can w
Electronics Forum | Tue Jun 20 22:52:10 EDT 2006 | davef
We all know those academic 'reliability studies' are very focused and only give a snapshot of real life. The real reliability studies of leadfree are starting as we scramble to meet our numbers. We have no idea about your customers' expectations ab
Electronics Forum | Wed Jun 21 13:02:49 EDT 2006 | grantp
Hi, That was another very interesting article posted. This article seems to point to the same conclusion, which is that lead free soldering is more reliable than Pb components with Pb paste, and Lead Free components with Pb paste? From what I see,
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