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.
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