hi Dick -

to make it more tricky: the phrase whether "unintentionally added" or not is
only entered in the ELV directive. It is not found in RoHS. Now YOU tell us
if that is better or worse for the non-automotive...

Schön' Gruß
Thomas Ahrens, Boostedt
e-mail [log in to unmask]
----- Original Message -----
From: "Anderson, Richard" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, December 08, 2004 8:42 PM
Subject: Re: [LF] Lead in ENIG plating


> Hi:
>
> Some are saying that because the Pb-bearing material was intentionally
added
> to the bath, it is not permitted.  Others are saying it is less than 0.1%
by
> weight (usually 5-10 ppm) so it is acceptable.  Still others say it is a
> stabilizer and unintentionally gets into the plating so it is an impurity
> and is allowed.  Don't forget, some electroless baths also use cadmium
too.
>
> It will depend on what the "laws" say and those who interpret them.
>
> "Cheers?"
>
> Dick Anderson - 978-442-5165
>
>  -----Original Message-----
> From:   Leadfree [mailto:[log in to unmask]]  On Behalf Of Steve Bezuk
> Sent:   Wednesday, December 08, 2004 1:00 PM
> To:     [log in to unmask]
> Subject:        [LF] Lead in ENIG plating
>
> Forgive me if this has already been addressed. I have a question on the
> interpretation of the lead that is found in ENIG platings. Lead compounds
> are commonly used as a stabilizer for the Ni in e-less Ni plating
> solutions. It is also commonly found in the Pd activator solutions. The
> then becomes buried in the plating even though it is not wanted or need in
> the final plating. I have not seen this issue discussed except by the
> plating solutions companies that are working on solutions. The question is
> whether or not this lead is considered intentionally or unintentionally
> added. I have heard both interpretations. I am also interested in comments
> on this issue. Some materials proposed to replace the Lead although not on
> the RoHS list are more toxic than the Lead and present in higher
> concentrations, Thallium for instance.
>
> Steve Bezuk, PhD
> GM Market Development
> Kyocera America Inc
>
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