HI Bev
Didn't mean to say it was easy, more that it is onerous. You do have to
check each time - there may well be a drop of what might as well be
plutonium inserted into the list.. But as the lists are generally grouped in
ways that I indicated, you do tend not to scrutinise in such complete detail
the parts are that are on say pesticides when you are dealing with metals.
This might be easer to understand if you reverse it. I'm pretty sure the
pesticide guys do not look too closely at the bits that deal with simple
alloys. Of course the further along the manufacturing chain you are, the
more complex the mix of materials you have and therefore scrutinise
carefully for. At the final product level (yours) you are in the most
complex zone of all.
Regards
Mike
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Monday, December 14, 2009 11:01 AM
To: [log in to unmask]
Subject: Re: [TN] RoHS burden
Do not believe it is as easy as you two think.
Bev
RIM
----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Mon Dec 14 05:13:08 2009
Subject: Re: [TN] RoHS burden
I agree with you Mike.
Most of this stuff is just cut and paste and we get our supplers to do
the donkey work and fill out their part of the form for us. I used to
think that no one read them either and was seriously considering
slipping a gramme of plutonium into a materials declaration just to see
if anyone said anything when our customer did actually comment on a few
details.
That said it is mind crushingly boring. In the past I've regarded it a
bit like toothache, if you can ignore it for long enough it seems to go
away. But that's not a very professional approach.
Regards,
Mike Fenner wrote:
> 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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