Hello John, I have to take issue with one thing you say, below, and so I will trim away the rest and interleave some comments: <snip> > Because if you want to put your > electronics products in the markets of EU, China, Japan, Korea, etc. you > have to do Pb-free. Thus, most of the electronics companies (for good or > for bad - thus it is not a problem anymore) are doing Pb-free... This is placing human greed above sound engineering and manufacturing principles. JUST BECAUSE FIVE HUNDRED MILLION PEOPLE DO A FOOLISH THING, DOES NOT MEAN THAT IT IS NOT A FOOLISH THING. <snip> > The way I see it, > 10-20 years from now, more than 95% of electronics products would be > built by Pb-free. At that time, all those politicians will be laughing > at us and saying how right they have been and how wrong we were. Because > at that time, the lead-free infrastructure could be solidly/completely > built, the reliability problems reduce <snip> There is no evidence whatsoever that lead-free and particularly pure-tin finishes will not have reliability problems. There IS evidence that they WILL. This entire lead-free movement was started with no sound scientific basis for it, and a verified history of pure-tin-finishes growing whiskers. I see this as comparable to eating a fashionable new plant-food that is known to occasionally kill people ["but all of those reports were not verified to be directly caused by this stuff...it could have been anything"], but is claimed to greatly prolong life expectancy, and is promoted by fancy television advertising that promotes it as the new, fashionable thing to do, and everyone is doing it, and therefore so should you. It will take twenty years for you, personally, eating that stuff, to find out whether it degenerates your nerves and you end up a vegetable in a wheelchair for the remaining hundred years of your life. Everything has consequences. Lemmings don't care at all for consequences; they all run in the same direction because they are following the ones in front. When many people are given False Data and told not to think for themselves, but to obey a self-proclaimed "Authority", they often go into agreement with the "Authority". This is not the first time that many people have agreed to do a foolish thing.