Hi Inge
We occasionally receive long lists of chemicals and substances which we have
to certify are not present in our products or our manufacturing. On first
sight they look like an impossible task.
On investigation these lists are invariably repetitions of all the
substances that have been subject of legislation banning them. They are
usually grouped according to the legislation topics and in chronological
order of the legislation. Amongst these would be ROHS.
These look very difficult on first sight, but [for us anyway] are not that
onerous as it is easy to see that about 98% of the stuff does not apply.
Likely REACH will affect this as it is getting into everything in the
compliance/EHS zone.
Specifically on ROHS: Certain aerospace and high rel defence companies do
have continuing concerns about Pb-free, and require strict
analysis/certification. Their concerns are the opposite of most other
people: make sure that no damaging Pb-free [finishes] creep in to their
facility. So as we, in common with most larger solder companies, routinely
give a solder analysis and RoHS statement with every shipment this actually
is not really a problem.
I am also aware that occasionally companies do have difficult requirements
on component values. These seem be those wanting to get very tight
accuracies on resistor values, but for some reason can't use hybrid thick
film, usually size/complexity expense, sometimes expense. (For those few who
possibly don't know: hybrid thick film resistors can be
accurately/individually laser trimmed).
Maybe Boeing falls into this category.
Hope this perspective helps.
Regards
Mike
Mike Fenner, Technical Manager
Indium Corporation
Europe
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge
Sent: Saturday, December 12, 2009 9:16 AM
To: [log in to unmask]
Subject: [TN] RoHS burden
Hi all,
have not had time to take part of the discussions for a while. Am consulting
at another company. They needed help with doing analysis of components.
Boeing is incorporated. I got a list of forbidden materials from them. Not
many can cope with Boeing's requirements. Only a few in whole Europe! Now,
I've a question. Has anyone of you been involved in such tough demands,
namely this one...not only they call for checking the finish of every
component type, but all values (!!) within each component family. That
means, that one sample from EVERY resistor value must be analyzed and
reported to Boeing. An incredible job list. Does this make sense?
/Inge
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