Thanks to all, FR4 it is. "Jonathan Friedman" <jf@xxxxxxxxxxx> wrote: >Yeah, I agree with the group. I think FR4 is fine... but I haven't gone up >as high as Richard. > >Jonathan Friedman, GSR >Networked Embedded Systems Laboratory (NESL) >University of California, Los Angeles (UCLA) > >-----Original Message----- >From: Weinberg, Richard (Richard) [mailto:rweinberg@xxxxxxxxx] >Sent: Friday, February 18, 2005 8:39 AM >To: icu-pcb-forum@xxxxxxxxxxxxx >Subject: [PCB_FORUM] Re: high speed board material. > > >I've done 2.5 Gb/S on Fr4 many times. > >Richard Weinberg >Agere Systems >207-846-4539 > >-----Original Message----- >From: sjcharles@xxxxxxx [mailto:sjcharles@xxxxxxx] >Sent: Friday, February 18, 2005 11:37 AM >To: icu-pcb-forum@xxxxxxxxxxxxx >Subject: [PCB_FORUM] Re: high speed board material. > >speed 1 ghz, 8 ly, 1/2 oz, rate edge approx 9n, 5/5 width and spacing >maybe 4 for necking. two or threes pair controlled Z. If Fr4 will do the >job then i that would be fine. > >thanks >> >> From: "Schwartz, Jerome" <jschwa01@xxxxxxxxxx> >> Date: 2005/02/18 Fri AM 10:49:28 EST >> To: "'icu-pcb-forum@xxxxxxxxxxxxx'" <icu-pcb-forum@xxxxxxxxxxxxx> >> Subject: [PCB_FORUM] Re: high speed board material. >> >> Sam, >> >> There are many variables associated with picking a material: >> >> 1. Dielectric Constant. >> 2. Frequency. >> 3. Edge rate. >> 4. Layer count. >> 5. Stackup. >> 6. Copper weight. >> 7. Impedance. Microstrip or stripline high speed signals. >> 8. Line width. >> 9. Rework. >> 10. Thermal. >> >> Do you know some of these? If so, I can suggest materials. >> >> Regards, >> Jerry Schwartz, CID+ >> IPC Advanced Certified Designer >> "May The Schwartz Be With You." >> >> Designer 3 >> Harris Corporation GCSD Voice (321)-727-5474 >> P.O. Box 37, MS 1/3232 Pager (321)-690-9797 >> Melbourne, FL 32902-0037 >> mailto:Jerome.Schwartz@xxxxxxxxxx >> http://www.harris.com >> >> >> >> >> >> -----Original Message----- >> From: sjcharles@xxxxxxx [mailto:sjcharles@xxxxxxx] >> Sent: Friday, February 18, 2005 10:42 AM >> To: icu-pcb-forum@xxxxxxxxxxxxx >> Subject: [PCB_FORUM] high speed board material. >> >> >> Group: >> We will be doing a PCI card which will have high speed digital >signals. Which >> type of board material (fr4,rogers...) would be ideal? >> >> TIA >> Sam >> >> >> ----------------------------------------------------------- >> To subscribe/unsubscribe: >> Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx >> with a subject of subscribe or unsubscribe >> >> To view the archives of this list please login at >> //www.freelists.org. 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