Re: gEDA-user: PCB burn in spec?

[Stuart Brorson <sdb@xxxxxxxxxx>]

I don't know about burn-in specs, but one usually specifies a glass
temperature (Tg) and a destruction temperature (Td) for the PCB
material you want to use (typically FR-4).  I don't recall the nominal
Td and Tg we used to use, but I do know they is now higher due to the
RoHS directives.

A quick Google search suggests that IPC-4101 provies specifications
which might be what you are looking for.

Cheers,

Stuart


On Wed, 14 Oct 2009, Ellec, Chris wrote:

>
> Can somebody recommends burn in spec. for PCB such as time vs.
> temperature? Is there a mil spec for that? I could only find mil-spec
> for burning in individual IC, not PCB (mil-std-883 for example).
>
> Thanks,
>
> Chris.
>
>
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