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July 2005

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Subject:
From:
Alistair Murray <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Alistair Murray <[log in to unmask]>
Date:
Wed, 13 Jul 2005 08:30:28 +0100
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Hi Gregg
The RoHS Directive bans very specific halogens. Phenolic laminates do
contain halogens that are not banned. Please find below a brief
interpretation of the Directive. In the Additional Notes paragraph, you
will see that there are some 70 other brominated flame retardants that
are not banned. The Directive therefore does not insist that laminates
are halogen free. 

ROHS Directive

From 01 July 2006, new electrical and electronic equipment put on the
market shall not contain:-

Lead
Cadmium
Mercury
Hexavalent chromium
Poly-brominated biphenyls (PBB) or poly-brominated diphenyl ethers
(PBDE) ~ such as  
o       Pentabromodiphenylether 
o       Octobromodiphenylether 
o       Decabromodiphenylether 
o       Bis(tribromophenoxy)ethane

An Annex exists with a list of exempted uses for some of these
substances where substitutes are not yet available or it is not
technically feasible to find substitutes.
Additional Notes

1)      The ROHS Directive gives producers a clear guarantee that no
individual EU Member State will be able to introduce separate bans or
restrictions on any other substance than those specified in the ROHS
Directive.
There are some 70 other brominated flame retardants that are not banned

I hope that this is of some help

Alistair Murray 
Technical Manager
Artetch Circuits Ltd
UK

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Greg Triggs
Sent: 12 July 2005 19:53
To: [log in to unmask]
Subject: [TN] Phenolic vs Halogenfree

                         With the switch to leadfree coming soon I am a
little confused regarding two possible laminate replacements. The first
is the phenolic type laminate that has a higher Tg and Td and can be
used in leadfree applications. The second is the Halogenfree material
that seems to use Phosphorus to replace the Bromine flame retardant.
Does the RoHass requirement specify that laminates are both Leadfree and

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Halogenfree ? Do the phenolic laminate contain Halogens.

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