Electronics Forum | Sat Jun 02 08:47:25 EDT 2007 | mika
I almost forgot; If the pcb have HASL (Non RoHS) surface finish, then big fine pitch QFP:s could be shifted during reflow, beacuse of the un-even pad-surface... We have been trough that scenario also... But step No.1 is to make sure that the componen
Electronics Forum | Thu Jul 19 12:25:51 EDT 2007 | patrickbruneel
Amen to that Hussman. The new lead-free world is not based on science or environment it�s all about $$$$$. And as I said before the promoters of lead-free care less about quality or reliability they just take this great opportunity to double their
Electronics Forum | Mon Nov 19 17:40:38 EST 2007 | bbarton
No, the thicker plating and need for very high quality drilling and plating is DUE to the higher copper dissolution rate and higher contact time. As to the Sn100C material, their claims seem to confirm a "lower" copper dissolution rate, but so does A
Electronics Forum | Fri Nov 30 19:39:51 EST 2007 | mika
Hi chs, What type of QFN or MLF package are we talking about? Assuming there is a middle thermal pad? Body Size & no. of terminals & pitch? What about your statement: "This package is so sensitive to any external force". Can you please explain what y
Electronics Forum | Tue Jan 22 14:11:49 EST 2008 | stepheniii
"The following additional exemption grounds are defined by DTI (partly referring to the WEEE Directive): � Spare parts for the capacity expansion or upgrade of EEE placed on the market before 1 July 2006 � It forms part of equipment not included in p
Electronics Forum | Thu Jan 31 09:08:27 EST 2008 | glezfl36
Since the implementation of the ROHS process in our Company with the higher temp requirements, we had observed an increase in problems related to delamination in the PCB's. Actually we are using FR408 and Gracescore materials and are changing to a Ve
Electronics Forum | Tue Mar 04 06:15:40 EST 2008 | jola
Hi. Thanks for your replies and your inputs in this. Regarding the exhaust or airflow might cause the problem I have finally got the manufacture to bring some specialist to us to have a check on the system. The other possible thoughts about the flux
Electronics Forum | Wed May 28 10:33:29 EDT 2008 | patrickbruneel
Chunks, If you ever come across such a report please let me know. As you already know RoHS (lead free) was not based on any scientific evidence that lead in electronics was bad for health or environment. WEEE would have been the right way to go �enc
Electronics Forum | Thu Jul 03 10:35:09 EDT 2008 | patrickbruneel
Chunks, Am glad to see that common sense didn�t totally disappear after July 1st 2006. BTW that movie is hilarious and goes so well with the subject. Isn�t it interesting how the RoHS promoters use semantics? Bart, Trust me, I understand and res
Electronics Forum | Mon Sep 15 11:03:51 EDT 2008 | swag
Thanks all for the input. There are no tants. close to these parts. GSx - you are correct in that this is ROHS compliant component so maybe a plating issue. We have done what you describe but to a lesser peak with fair improvement. Not seeing muc
