It's been a few years since I've worked with any PCB fab house on
stackups and materials for
high speed SERDES routing, so I've lost track of what is in vogue and at
the knee of the curve
in terms of cost/performance. For the current product I'm looking at
we're "only" dealing with
PCIe-Gen 4 (16Gbps). In "the old days" Nelco-13-SI on a 1080/2116 glass
was a reasonably
priced, low loss, reasonably temperature stable, reasonably flat weave
product applicable
to the 2, 4 and 10G channels of the day. What has the industry moved to
these days?
I fully expect some of yesterdays exotic materials may have become
mainstream and affordable.
What materials and glass weaves are at the knee of the cost/performance
curve today that
provide a good environment for 16-25Gbps channels?
Thanks!
Ralph Wilson
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