=20 =20 >A basic way is to use Pade'=20 >approximation to extract RLC and incorporate them into most available circuit simulators. Dear Celine, There are several effective approaches for RLC modeling of interconnect elements. =20 One popular way is using a TDR in conjunction with IConnect software. There also exist mathematical formulae for ascertaining "approximate" RLC models for a via, connector, PCB trace, etc. Field solvers can be applied to extract models which are more accurate than by analytical techniques. Can you furnish a good reference related to use of Pade' approximation for RLC modeling of IC packages, vias, or connectors? Thank you in advance. Abe =20 ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ 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