--------
In message <[email protected]>, John Devereux writes:
>There is also the question of exactly what properties of FR4 are
>limiting for "metrology" use.
FR4 are certainly not without its own problems, in particular
with respect to mechanical/electrical phenomena (bending, tempco etc.)
And saying "Ceramic" isn't really narrowing down what we mean
anyway, pretty much anything in the Rogers catalog is in game:
https://www.rogerscorp.com/acs/products.aspx
I suspect only experiments would be able to tell which of many
possible desirable properties are most beneficial ?
The real question is if the mobile devices have brought the volume
up so that running small series for specialty use is affordable?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
[email protected] | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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