Hi Mohammed, 

The recent RoHS Exemption Review report by ERA Technology attempts to
clear up this very issue. The report acknowledges the ambiguity of the
wording of item 7.1 in the RoHS Annex, "lead in high melting temperature
type solders (i.e., tin-lead solder alloys containing more than 85%
lead)," and states in fact that the original intent of this phrase is
unknown and no records currently exist to discover it. I could
paraphrase the rest of the discussion, but it would be better for you to
read it directly (see section 1.4): 

http://europa.eu.int/comm/environment/waste/era_technology_study_12_2004
.pdf

Hope that helps.


-------------------------------
Todd MacFadden
Component Engineer
Bose Corporation
508.766.9088
-------------------------------


-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Mohammed Wasef
Sent: Wednesday, March 16, 2005 10:04 AM
To: [log in to unmask]
Subject: [LF] High Lead Exemption


Greetings

I apologize if this has been discussed earlier.  I have a question
regarding the use of PbSn solders containing 85% or greater lead by
weight.
1.      I understand that this class of solder is currently exempt by
the
RoHS Directive.
2.      I also understand that this exemption is ONLY for PbSn, and
other
high lead solder combinations are not exempt yet but the EU parliament
(sun as PbSnAg, PbSb, PbSbSn, etc) Please correct me if the above two
statements are wrong.

I am interested in understanding the legal ramifications and
consequences of using high Lead containing PbSn solders.  Since Pb is
being intentionally added in solder form, will the product still be
considered RoHS compliant? Can the products be marked/sold as being RoHS
compliant?

Best Regards

Wasef

*****************************************
Mohammed Aziz Wasef, Ph.D.
Packaging Development Engineer
ANADIGICS, Inc.
141 Mount Bethel Rd
Warren, NJ - 07059
Phone: (908) 668-5000 x6423
Fax: (908) 791- 6009
[log in to unmask] <mailto:[log in to unmask]>
*****************************************



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