Louis,
Not sure what your definition of certified is, but a circuit board consists of:
Epoxy
Copper
Glass fibers
Solder mask
Surface finish (and possibly intermediate layer diffusion control metal layer)
So, does the epoxy consist of one of the two banned families of brominated fire retardants (BFRs)? Unlikely.
Is the copper contaminated with mercury or lead or cadmium? Unlikely. I presume you are not making electronics for the US NAVY where an old contract might call for cadmium in some instances because of its anti-corrosion characteristics.
Are the glass fibers going to be contaminated with
Mercury - unlikely
Cadmium - unlikely
Cr(VI) - unlikely
Lead - possibly, but it would be exempt anyway
Solder mask - of all the RoHS substances the BRFs would be the most likely, but extremely unlikely.
Surface finish - not in iSn, iAg, ENIG, ENERPIG, OSP, but it that REALLY lead free HASL you received? :)
So use XRF and look for Cd, Hg, Pb, Cr and Br. The latter is the one that will cost you the most to test for, IF you are buying FR4, since a hefty portion of the total weight of the board comes from tetrabromobisphenol A (NOT restricted - yet). If you have halogen free boards, then you shouldn't find any.
Bev
RIM
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Louis Hart
Sent: Friday, September 17, 2010 8:15 AM
To: [log in to unmask]
Subject: [TN] 'certification' to RoHS
Technetters, I've noticed many discussions of RoHS and compliance on this forum over the years. A question came up here yesterday, an answer to which I volunteered to attempt to obtain.
Is it possible to certify an unpopulated printed circuit board as RoHS compliant? My understanding is that a board's constituent materials, as they come from a supplier, can be so certified.
Louis Hart
Compunetics
Monroeville, PA
USA
[log in to unmask]<mailto:[log in to unmask]>
412-858-1272
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