No, it does not make a significant difference. Based on measured data on real test PCBs. Spend you time on bigger issues. -----Original Message----- From: Joel Brown Sent: Friday, December 06, 2013 11:48 AM To: SI-List Subject: [SI-LIST] PCIe Gen2 coupling caps Is it necessary or desirable to cutout the reference plane under the coupling caps for PCIe Gen2? If I want to include a model for the capacitor with or without the cutouts in a Hspice simulation what would be the best way to do this? I likely will be using 0201 size caps. Thanks ------------------------------------------------------------------ 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: 2014.0.4259 / Virus Database: 3657/6891 - Release Date: 12/04/13 ------------------------------------------------------------------ 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