Hi Marcus,
My blog, and others, can be found at <blog.ipc.org>
I also write reliability columns in Global SMT & Packaging magazine dealing with related subject matters.
Werner
-----Original Message-----
From: Marcus L. Thompson <[log in to unmask]>
To: [log in to unmask]
Sent: Sat, Jul 18, 2009 3:19 pm
Subject: Re: [LF] [RoHSUSAPushback] Update on H.B. 2420
Good day, Werner.
Could you provide a link to your recent blog entry for the community to
follow?
Thanks.
Marcus Thompson
--- Previous Message in This Thread ---
Subject: Re:[LF] [RoHSUSAPushback] Update on H.B. 2420
From: Werner Engelmaier /* <[log in to unmask]>
To: [log in to unmask]
Date: Saturday, July 18, 2009 9:27:08 AM
> Hi Bob,
>
> Thanks for the feedback.
>
> Unfortunately, it is ignorant remark like the one you are quoting, that gets the whole industry into trouble.
>
> It is were dangerous to judge the rest of the industry of one's limited perspective—see my recent blog in the IPC blogs.
>
> Werner
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> -----Original Message-----
>
> From: Bob Landman <[log in to unmask]>
>
> To: [log in to unmask]
>
> Sent: Sat, Jul 18, 2009 11:25 am
>
> Subject: Re: [LF] [RoHSUSAPushback] Update on H.B. 2420
>
>
>
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>
> Colleagues:
>
> This past week I attended a SMTA/IEEE joint meeting on lead free manufacturing.
>
> The presenters statements, as well as those in attendance, except for myself a
>
> few others, were sanguine about the reliability of lead free manufacturing
>
> today. A statement was made by a reliability engineer with many years
>
> experience that there was no reliability concerns now that lead has been
>
> eliminated except perhaps for NASA space projects because “most electronics has
>
> a useful life of 3 years”. The agenda of the meeting: July_2009_SMTA-IEEE
>
> joint_meeting - Hudson NH.pdf
>
> Are you all prepared to toss the electronics you have purchased in 3-5 years
>
> since the RoHS law came into effect? Willing to role the dice? What about all
>
> the extremely expensive test equipment being purchased today (from Agilent,
>
> Tektronix, Teradyne, etc..) It is all lead free now. Is there really nothing
>
> to worry about?
>
> Are you
> saying to yourself “I doubt it will happen to me”? What convinced you?
>
> Where’s the evidence? On what is your level of confidence based? Isn’t it so
>
> that lead-free electronics is in its infancy? Hasn’t the literature made it
>
> clear it takes years to show the failures (and they may be intermittent failures
>
> which are very=2
0hard to find)?
>
> How about that new car you just purchased that is loaded with electronics (which
>
> includes pollution controls, air bag deployment and anti-lock brakes). How
>
> about that rapid transit train you ride to work every day in that is controlled
>
> by electronics? Did you see the pictures of the crash of the Wash DC Metro a
>
> few weeks ago? That was blamed on a failure of the control system.
>
> http://www.nytimes.com/2009/07/14/us/14rail.html WASHINGTON — A single broken
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> part probably caused last month’s deadly train crash here, the National
>
> Transportation Safety Boardhinted Monday, as it issued an urgent recommendation
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> to local and federal authorities to evaluate similar systems around the country
>
> for “adequate safety redundancy.”
>
> More than ever before, technology is connected to our lives in a very intimate
>
> way. Someone you know has a pacemaker. Cardiac pacemakers have failed due to
>
> tin whiskers – did you know that? The FDA recalled them -
>
> 2008-Brusse-Pacemaker Committee-Metal Whiskers.pdf
>
> There have been many recent articles on the sub
> ject which clearly indicate that
>
> tin whiskering is still a concern. Here are links to them so you can judge for
>
> yourselves. (or do you not want to know, you want to maintain your lead-free
>
> innocence?)
>
> Several=2
0quotes come to mind as I reflected on what I was hearing that evening…
>
> Mark Twain said ““It ain't what you don't know that gets you into trouble. It's
>
> what you know for sure that just ain't so.”
>
> Louis Pasteur noted that “In the fields of observation chance favors only the
>
> prepared mind”.
>
>
>
> 1) APEX 09 Bare Board Material Performance after Pb-free Reflow
>
> -presentation.pdf (excellent very detailed study of reliability of lead free pc
>
> boards)
>
> 2) apex tin mitigation Lesniewski.pdf (suggestions on how to mitigate (not
>
> eliminate) tin whiskering)
>
> 3) NASA_DoD LFE Project-June-24-2009_SN whisker tele.pdf (excellent
>
> presentation by Kurt Kessel of NASA Kennedy on extended life testing of
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> lead-free mfg)
>
> 4) The Pb-free Manhattan project.pdf (why is this proposed $60M project
>
> necessary?)
>
> 5) Borgesen_Lead_free_reliability.pdf (Borgeson notes here how one can be
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> deceived by the design of experiment into thinking all is well with lead free
>
> mfg)
>
> 6) Developing a NASA Lead-Free Policy for Electroncs_Lessons Learned.pdf
>
> 7) Pb-free DoD brochure.pdf and DID for LFCP DI-MGMT-81772.doc (DOD cautions
>
> to be aware of lead-free problems)
>
> NASA also has quite a collection of
> articles at this link
http://nepp.nasa.gov/WHISKER/
>
>
>
> Bob Landman, President
>
> Senior Member, IEEE
>
> IEEE Power & Energy/Reliability Societies
>
> H&L Instruments, LLC
>
> www.hlinstruments.com
>
>
>
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