Hello, the document is: IEC 61188-7, Ed.1: Electronic Component Zero Orientation for CAD Library Construction as the US (Level A) and the European/Japanese People (Level B) had different opinions about zero orientation it has two options for zero orientation: Level A Basic Rules For level A type component descriptions for multiple leaded parts pin one shall be left oriented per the basic rules however, pin one shall be located at the upper or upper-left position. Level B Basic Rules For level B type component descriptions for multiple leaded parts pin one shall be left oriented per the basic rules however, pin one shall be located at the left or lower-left position. Hope this helps Best Regards Rainer Taube Master IPC Trainer (IPC-A-610) TAUBE ELECTRONIC GmbH Nostitzstraße 30 10965 Berlin Tel.: ++49 (0)30 69592511 Fax: ++49 (0)30 6942338 e-mail: [log in to unmask] http://www.taube-electronic.de Geschäftsführer/CEO: Rainer Taube Amtsgericht/Trade Register: Berlin HRB 95715 B USt.-ID/VAT: DE 814229848 Am 5 Aug 2011 um 10:39 hat S. Roy geschrieben: > Good morning, > > I recall there being a document about building PCB footprints with > zero orientation, pin 1 being down in the lower-left corner, etc. Can > anyone supply me with the name of that document? And who put it out > there? Is anybody still using this standard? Thanks... > > Respectfully, > > Steven D. Roy > PCB Designer, CID > Audio Authority Corporation > 2048 Mercer Road > Lexington, KY 40511 > (859) 233-4599 > [log in to unmask] > > > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ > > ---------------------------------------------------------------------- > ----------- DesignerCouncil Mail List provided as a free service by > IPC using LISTSERV 16.0. To unsubscribe, send a message to > [log in to unmask] with following text in the BODY (NOT the subject > field): SIGNOFF DesignerCouncil. To temporarily stop/(restart) > delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) > For additional information, or contact Keach Sasamori at > [log in to unmask] or 847-615-7100 ext.2815 > ---------------------------------------------------------------------- > ----------- > ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 16.0. To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ---------------------------------------------------------------------------------