When I use this data with a good field solver I get PCBs back with impedances within 5% of my desired value on the first try. Not bad! -----Original Message----- From: Bill Hargin (In-Circuit Design) Sent: Thursday, February 28, 2013 8:48 AM To: fred.hickman@xxxxxxxxxxxxxxx ; si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Fwd: AW: Re: AW: FR4 Permittivity Thanks, Fred. You guys do a great job, BTW, of providing the data we need for effective stackup planning ... Very helpful. Thanks again. Bill Hargin In-Circuit Design, USA Software & SI Simulation for High-Speed PCB Design (425) 301-4425 • b.hargin@xxxxxxxxxx • Skype: bill.hargin Online: www.icd.com.au -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Fred Hickman Sent: Thursday, February 28, 2013 3:16 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Fwd: AW: Re: AW: FR4 Permittivity Hi All, Here is a link to the Isola HSD Dk Df files that I tried to send earlier. Please let me know if this is what you were looking for. https://isola.securevdr.com/d/safb8441f5424885b Fred E. Hickman III Director of High Speed Digital Products Isola 3100 W. Ray Road, Suite 301 Chandler, AZ 85226 Cell - 602-722-4053 Work - 480-586-2796 P.S. Want to receive the latest news about Isola? Join the Isola Mailing List <http://eepurl.com/sRzEr>! ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2899 / Virus Database: 2641/6136 - Release Date: 02/27/13 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu