So, I know that RIM is huge and needs to protect its rep very closely,
so your testing strategy is huge, but how are the littler guys supposed
to be able to do this type of due diligence? It will probably take just
one whistle-blower aware of one of these pitfalls to probably put many
companies under, if their shipments are stopped at critical times. I
think most of us are having to trust the manufacturer labels and certs
of compliance.
Comments like yours, below, that you have found non-compliance when it
should have been compliant, just make me shudder...
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: June 27, 2006 9:57 AM
To: [log in to unmask]
Subject: Re: [LF] Clarification sought on Pb-containing ceramic
Yep
1) Buy them from your solder supplier. Many would be just off the shelf
bars, but if you want something in the ppm range you will pay extra for
that.
2) You buy your Cr(VI) salts from any reputable chemical supply house.
Note, we waited a looong time for our order to be filled because
everyone and his dog as ordering to get ready for RoHS.
3) Anywhere where you buy ICP standards.
4) Just use SEM/EDX for relative, not absolute, values so we do not use
standards. A nice SEM picture showing bright white lead inclusions in
the solder with an accompanying EDX spectrum does wonders to bring a
sceptical supplier around!
Bev
RIM
-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Tuesday, June 27, 2006 11:48 AM
To: [log in to unmask]; Bev Christian
Cc: [log in to unmask]
Subject: RE: [LF] Clarification sought on Pb-containing ceramic
Are there available "standards" for these instruments?
Victor,
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Tuesday, June 27, 2006 10:35 AM
To: [log in to unmask]
Subject: Re: [LF] Clarification sought on Pb-containing ceramic
Amol,
We have:
1) Analytical XRF (Pb, Cd, Hg, Cr, Br)
2) UV-vis Cr(VI)
3) ICP-OES (Pb, Cd, Hg, Cr)
4) SEM/EDX (Pb, Cd, Hg, Cr, Br if > 2%)
We send a few things out for brominated fire retardants - at $300 a
crack!!!
We test all homogeneous parts of all products, but only once, as we are
still going through things for the first time through. What we do for
ongoing is still to be determined. Guaranteed employment for chemists!
Bev
RIM
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Kane, Amol (349)
Sent: Tuesday, June 27, 2006 11:29 AM
To: [log in to unmask]
Subject: Re: [LF] Clarification sought on Pb-containing ceramic
Hi Bev,
How was the testing done? Did you use a XRF device? Do you have in
place, a sampling plan to test incoming components?
Thanks,
Amol Kane
M.S (Industrial Eng.)
Process Engineer
Harvard Custom Manufacturing, Inc.
941 Route 38 Owego, NY 13827
Phone: (607) 687-7669 x349
[log in to unmask]
www.harvardgrp.com
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Tuesday, June 27, 2006 11:26 AM
To: [log in to unmask]
Subject: Re: [LF] Clarification sought on Pb-containing ceramic
Mike,
Thanks. That's what I thought, but I just wanted some hand-holding. :)
Just for interest for the wider audience, we have caught:
1) A major LCD supplier
2) A major producer of BGAs
3) A major chip manufacturer
Each gave us certified RoHS compliant parts that were not. Now in each
case I am sure that the mistake was not done for devious purposes. In
one case it was an honest misinterpretation of the directive and in the
other two it was an "oops!". Nevertheless, these are cases that could
have come back to bit us. All three involved lead. We have tested
hundreds and hundreds of parts.
Bev
RIM
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Mike Kirschner
Sent: Tuesday, June 27, 2006 11:13 AM
To: [log in to unmask]
Subject: Re: [LF] Clarification sought on Pb-containing ceramic
Bev,
I've had this discussion with one of the major SMT resistor
manufacturers.
They consider it a glass with a "conductive phase in it"; just the same,
glass or ceramic it's exempt in electronic components.
Mike
On Mon, 26 Jun 2006 08:41:49 -0400, Bev Christian <[log in to unmask]>
wrote:
>"Examples of semimetallic ceramics are lead oxide (PbO), ruthenium
>dioxide (RuO2), bismuth ruthenate (Bi2Ru2O7), and bismuth iridate
>(Bi2Ir2O7). Like metals, these materials have overlapping electron
>energy bands and are therefore excellent electronic conductors. They
are
>used as "inks" for screen printing resistors into thick-film
>microcircuits. Inks are pulverized conductor and glaze particles
>dispersed in suitable organics, which impart the flow properties
>necessary for screen printing. On firing, the organics burn out as the
>glazes fuse. By varying the amount of conductor particles, it is
>possible to produce wide variations in the resistance of thick films."
>Britannica.com
>
>I would presume the use of lead in this instance is exempt. I would
>consider fused lead oxide as a ceramic. That is my interpretation.
>Comments?
>Bev
>RIM
>
>
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