Hi, does anybody know of a place where one can get scattering parameters (s2p files) for "typical" vias used in current FR-4-based PCBs? By typical I mean max. of 1:10 ratio (drill hole size vs. PCB thickness) vias. I know that there are many variables involved, like number of power planes, pad sizes, through-hole vs. back-drilled vs. buried vs. laser, etc., so any pointers would be appreciated. Unfortunately, I don't have a 3D solver at hand, with which I could model this. Thanks! Stefan ------------------------------------------------------------------ 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 technical documents are available at: http:/www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu