And that is just you, John, a responsible, pragmatic engineer who exhausts every bit of due diligence, responds only to factual information, not from untested ideas, is compelled to resist change unless it is qualified and controlled, no matter the amount of pressure applied by others, whether they have some skin in the game or not. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of John Burke Sent: Thursday, October 05, 2006 12:56 PM To: [log in to unmask] Subject: Re: [TN] [LF] RoHS Opposition (on Pb) isn't sound (SMT Sep 2006) It's very interesting, If I were the chief technologist of a major solder supplier (which I am not) I would be taking the view that there were sufficient unknowns on reliability along with sufficient questions environmentally to take a neutral stance on the issues of lead free. Were I in that position I would be: 1 Telling the world that my company was at the leading edge of the technology and had/are undertaking extensive and exhaustive life cycle reliability testing - on an initiative which after all is a law imposed on the industry and there is nothing that anyone right now can do about it. 2 I would be remaining neutral on the environmental issues while actively encouraging further research on the issue publicly as an environmentally concerned company - all with a strictly neutral viewpoint on the outcome. 3 Actively seeking data from my extensive customer base on reliability and issues faced on a day to day basis on reliability and process issues. Why? - because in that position I believe that to represent my (hypothetical) company correctly I would be somewhat negligent in making light of real data when after all the change to lead free is a "done deal" at least for the short term - so what's the point?. I would also be looking at a future where in 20 20 hindsight in 2 years time, when the industry might be looking back at a very shaky period on reliability, I would not want my (non data founded) views coming up on a search engine when the words Lead free reliability along with my company name were typed into a search engine........ But that's just me................ John -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Hogg, Blair K. Sent: Thursday, October 05, 2006 9:09 AM To: [log in to unmask] Subject: Re: [TN] [LF] RoHS Opposition (on Pb) isn't sound (SMT Sep 2006) The article is available at <http://smt.pennnet.com/Articles/Article_Display.cfm?Section=ARTCL&ARTIC LE_ID=273809&VERSION_NUM=2&p=35> Or http://tinyurl.com/z723y I don't remember if anyone posted this as of yet. I've read the article, and it reeks of statistical misleadings. In his conclusion Dr. Lasky states "What about benefits that a lead-free assembly might provide? The "Repeal RoHS" folks miss a strong plus for lead-free assembly. In the era of cheaper, lighter, faster, and smaller, lead-free assembly enables closer pad spacing because it does not wet as well as tin/lead solder. Because of this benefit, many lead-free products could not be manufactured with leaded solder." This may very well be true, but why make the entire industry switch to lead-free solder simply because it may be better for assemblies with closer pad spacing? Blair -----Original Message----- From: Leadfree [mailto:[log in to unmask]] On Behalf Of MA/NY DDave Sent: Monday, October 02, 2006 1:04 AM To: [log in to unmask] Subject: [LF] RoHS Opposition (on Pb) isn't sound (SMT Sep 2006) Hi IPC LF Listservers, For those of us who get SMT Magazine we may have already seen the September 2006 article by Dr Ron, (Ron Lasky), in SMT Magazine's Surface Mount Process Optimization regular column. As soon as it is available on www.smtmag.com one of us should post the link. The title is " "Repeal RoHS" Movement Emerges", which is a bit ODD to me for a Process Optimization column. Oh Well !!. SMT Magazine should probably change the column title to a free flowing opinion piece. This opinion piece by Ron is extremely negative on anyone who opposes Lead- Free as if they are just un-informed underclass persons. Dr Ron is not alone in this approach. In a older good book with lots of good information from the Univ of Maryland (CALCE) the same opinion was written for anyone who stands for sound engineering or even asks "Just Why are we doing this?" or "Where's the data?" . CALCE too, was not alone for jumping on the current political band wagon. (For reflection is a historical data point that the first emperor of China sealed in his mercury tomb, all his chief engineers that engineered his tomb) Anyway, I like Dr Ron, know him personally, and Dr Ron sometimes reads this list. Even SO for those who get the magazine let the comments begin on his article. I will add mine a little later. Yours in Engineering, Dave YiEngr, MA/NY DDave P.S. I hope a Canadian Goose was caught by RockWellC DavyH. ------------------------------------------------------------------------ -------Leadfee Mail List provided as a service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Leadfree To temporarily stop/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL) Search previous postings at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ------------------------------------------------------------------------ ------- ******************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. 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