Bromine is NOT disallowed, only a couple of specific bromine compounds
that are not normally found in laminates. Most FR4 is flameproofed by
tetrabromobisphenol A which is permitted.

Brian

Chris Ball wrote:
> Hello Folks-
>
> We're trying to cost a new design which may have to be leadfree, rohs
> compliant, etc...
>
> We would otherwise reference IPC4101/21. Any recommendations as to what we
> should specify for this one? We were gonna ref. /24 but that's got
> bromine......
>
> Thanks in Advance,
> -Chris
>
>
>
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