I don't have the formula, but I do have a chart giving the correlation between trace width, thickness, temperature and resistance. If you let me have your fax Number I will fax it through. Geoff Layhe. www.lamar-uk.co.uk > ---------- > From: mdsn500[SMTP:[log in to unmask]] > Reply To: TechNet E-Mail Forum.;mdsn500 > Sent: 19 July 1999 20:14 > To: [log in to unmask] > Subject: [TN] DC Resistance > > Does anyone have a formula equating copper foil size, trace wirdth and > dc > resistance values(not impedance)?- Thanks Mike hawkins > > ############################################################## > TechNet Mail List provided as a free service by IPC using LISTSERV > 1.8c > ############################################################## > To subscribe/unsubscribe, send a message to [log in to unmask] with > following text in > the body: > To subscribe: SUBSCRIBE TECHNET <your full name> > To unsubscribe: SIGNOFF TECHNET > ############################################################## > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for > additional > information. > If you need assistance - contact Gayatri Sardeshpande at > [log in to unmask] or > 847-509-9700 ext.5365 > ############################################################## > ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################