Electronics Forum | Fri Oct 12 10:33:22 EDT 2007 | jdumont
So if I have a PCB with 2000 parts on it and one 0805 resistor has 63/37 plating on the terminations the entire assy has to be considered non lead free? That cant be right... can it?
Electronics Forum | Fri Oct 12 10:45:49 EDT 2007 | jdumont
Do you know where I can find some literature to back up that statement? Thanks for the assistance by the way...
Electronics Forum | Fri Oct 12 13:41:17 EDT 2007 | patrickbruneel
I found the right RoHS equation: SnPb - Pb + Cu +Ag = Au Have a great weekend lol
Electronics Forum | Fri Oct 12 15:24:24 EDT 2007 | patrickbruneel
The exempt request is still under consideration. Look at page 6 in following link. http://www.buyusa.gov/europeanunion/rohs_exemption_status_tracker.pdf
Electronics Forum | Wed Oct 17 08:20:20 EDT 2007 | davef
Darby Look here: * http://www.eetimes.com/news/latest/showArticle.jhtml?articleID=202401949 * http://www.iphonematters.com/article/apple_iphones_not_green_enough_grounds_for_green_peace_lawsuit_111/
Electronics Forum | Thu Nov 08 10:14:43 EST 2007 | slthomas
"Their third attempt was a report that Process Engineering was being resistive and skewing the tests." Thanks for the early a.m. laugh. I needed it.
Electronics Forum | Mon Dec 17 12:15:10 EST 2007 | Claude_Couture
What a coincidence! Our last solder analysis showed our Ge to be .001% and the lab recommended to bring it up to .005% to get a better wetting. They even supplied a formula to calculate the amount to add based on the % and the quantity of solder in t
Electronics Forum | Wed Dec 19 14:20:19 EST 2007 | slthomas
I'm inclined to suggest that you use a specified temperature, thus eliminating your situation. Why not use 90�C? I suppose you could calculate a duration for 70 based on the requirements at 40 and 90 if you really wanted to, but still I wonder why.
Electronics Forum | Fri Feb 01 13:38:23 EST 2008 | cyber_wolf
When it quits printing correctly.... replace it. No, it is not after a certain number of squeegee strokes. The only way that could possibly be calculated is if your squeegee blade parameters never varied.
Electronics Forum | Thu May 08 21:19:46 EDT 2008 | davef
Don't allow x-outs. There has been previous discussions here in SMTnet that maybe found by searching the Archives. Steve Gregory calculated that printing paste on X-outs cost him about $50k a year.
