PCB Boards and Broad Temperature Ranges

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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thermal

This paper might be of some interest to you:

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

Dave :)

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David L. Jones

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