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February 2006

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Subject:
Re: Halogen limits of laminate
From:
Geoff Layhe of Lamar Group <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Geoff Layhe of Lamar Group <[log in to unmask]>
Date:
Mon, 6 Feb 2006 17:23:45 -0000
Content-Type:
text/plain
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text/plain (66 lines) 
Can't remember where it's specified but halogen free limits are 0.09% (900ppm) bromine & 0.09% (900 ppm) chlorine.  0.15% (1500 ppm) total halogen.

The bromine content of "standard" Fr4 is around 5-7%. Not sure what the chlorine content is.

Geoff Layhe



-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Colin McVean
Sent: Monday, February 06, 2006 3:43 PM
To: [log in to unmask]
Subject: [TN] Halogen limits of laminate


Can anyone tell me what halogen content is in a typical FR4 grade
laminate in PPM terms?

Ie Bromine, Chlorine etc and what the exact limits are on what would be
referred to as "Halogen free" materials?

 

Colin McVean M.Inst.C.T.

Production Manager

Artetch Circuits Limited

Main: 01903 725365

DD:    01903 712926

Email: [log in to unmask]

www.artetch.co.uk

 


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