Mani, assuming constant cross section of the trace, any 2D field solver can give you inductance per unit length (multiply by the trace length to get total inductance). Note that what really counts is the loop inductance (as opposed to self inductance), which depends not only on the power trace length and width, but also on its distance to the ground return plane(s). The 2D field solver correctly handles this. A free field solver is e.g. TNT/MMTL, available from Sourceforge or from my website (http://www.testtechniques.com --> Free Tools). Wolfgang From: Dan <signal.integrity2@xxxxxxxxx> To: si-list@xxxxxxxxxxxxx Date: 05/04/2011 01:01 PM Subject: [SI-LIST] Finding Parasitics in a trace Sent by: si-list-bounce@xxxxxxxxxxxxx Hi All, i have a power trace in which i need to caluclate the parasitic resistance and inductance between the load and decap. could anyone help me how can i find the parasitic resistance and inductance in a trace? Thank You Mani ------------------------------------------------------------------ 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.net 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 technical documents are available at: http://www.si-list.net 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