PCB Boards and Broad Temperature Ranges

[Artist]

There is an expensive board material designed to have the same thermal
coefficient of expansion as copper. How important is it to use this
material instead of the lower cost paper or fiberglass over the
industrial and military temperature ranges?

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[David L. Jones]

Artist wrote:

There is an expensive board material designed to have the same
thermal
coefficient of expansion as copper. How important is it to use this
material instead of the lower cost paper or fiberglass over the
industrial and military temperature ranges?

This paper might be of some interest to you:
http://asm.confex.com/asm/istfa04/techprogram/paper_4572.htm

Generally FR4 fibreglass is fine, you'd usually need a good reason to
go for the more exotic materials.

Dave

 

[Fred Bloggs]

Artist wrote:

There is an expensive board material designed to have the same thermal
coefficient of expansion as copper. How important is it to use this
material instead of the lower cost paper or fiberglass over the
industrial and military temperature ranges?

Is that you, garbage_developer?