Creepage is probably OK, it is the Cleavage you want to avoid. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of TAYLOR Paul R Sent: Thursday, June 26, 2014 3:28 AM To: [log in to unmask] Subject: Re: [TN] z-axis voltage separation Wow, good find! 'creepage.com' is probably one of those websites you avoid during work hours. However in this case it seems quite legit! paul Paul Taylor Alstom Grid | R&D | Post Design Service Team Leader Phone: +44 (0) 1785 223251 (x2014) | Mobile: +44 (0) 7827 312568 | E-mail: [log in to unmask] Office address: St Leonards Avenue, Stafford, ST17 4LX Site: www.alstom.com ** Please consider the environment before printing this e-mail ** -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson Sent: 25 June 2014 20:19 To: [log in to unmask] Subject: Re: [TN] z-axis voltage separation One more valuable link: Although the subject of this thread was was voltage separation in the z-axis of a PCB, I did find a very useful ONLINE CALCULATOR for Creepage and Clearance per IEC/UL http://www.creepage.com/ It saves having to wade through the specifications and various tables, and if you are calculating for a PCB construction, select the "IIIa/IIIb" Material Group simple. (big thanks to Dave Larusso!) Jack ________________________________ CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________