As a quick approximation, one could calculate the cross-sectional area of the via and compare the via's cross-sectional area with copper wire guages for which current capacities are given. TJ Thomas L. Jackson, PE Staff System Engineer L1-50, Remote Sensing Systems Engineering Missiles and Space Operations Lockheed Martin Space Systems Company telephone: (408) 742-2013 facsimile: (408) 742-7701 location: B149/E2 -----Original Message----- From: AK Mishra [mailto:akmishra@xxxxxxxx] Sent: Monday, July 08, 2002 1:53 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Current Carrying Capacity I am in search for a formula for calculating "Current Carrying capacity" of a Via. All the Books talk about Traces only. Help me out.. Thanks! A.K. MISHRA Director of Pre-Engineering ACDI 47 E. All Saints Street Frederick, MD 21701 301-620-0900(Voice) 301-624-4355(fax) 301-471-4178(Cell) www.acdi.com ------------------------------------------------------------------ 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 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 ------------------------------------------------------------------ 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 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