Check out: http://www.ultracad.com/viacurrents.pdf <http://www.ultracad.com/viacurrents.pdf> In general, pcbstandards.com has a wealth of information available for the download at: http://www.pcbstandards.com/SiteIndex2.php <http://www.pcbstandards.com/SiteIndex2.php> In your case, of particular interest should be: http://www.cpdserver.com/pcbstandards/Calculators/ViaCurrent/ <http://www.cpdserver.com/pcbstandards/Calculators/ViaCurrent/> -----Original Message----- From: Scott Riley [mailto:[log in to unmask]] Sent: Friday, September 26, 2003 9:20 PM To: [log in to unmask] Subject: [DC] Calculating current carrying capacity through a via I'm looking for a reliable method to determine how much current a single via can carry. I know that it will be a function of the via diameter, copper thickness, dielectric thickness, etc. What I'm looking for is a calculator, reference table, or rule of thumb that would make the calculation a little easier. Any help is appreciated. Scott D. Riley Technical Design Service 607-658-9322 <http://www.techdesignservice.com/> www.techdesignservice.com ---------------------------------------------------------------------------- ----- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------