Jeff,

This is the part of you message I agree with most:

None of this is meant to say that FR4 can not be used in
high-speed/high-frequency design just that it is easier to get the
performance from other products. I have seen/heard of/worked on designs in
the 2+ GHz range on multilayer FR4 laminates. These can/do work but design
becomes super-critical, and it is not a simple place and autoroute routine.
Not all designer or engineers understand the parameters and attention to
detail required to make it work.

I especially mean the last sentence. Got some great stories to tell here.

Earl

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------