Anthony, Note that this applies to smt devices only. Pin-in-hole (thru-hole) placement machines still use the pin 1 location as the part origin. Regards, Brant McClelland Design Center, Solectron Texas [log in to unmask] > ---------- > From: SteveZeva[SMTP:[log in to unmask]] > Reply To: TechNet E-Mail Forum.;SteveZeva > Sent: Thursday, March 26, 1998 12:28 PM > To: [log in to unmask] > Subject: Re: [TN] Land Pattern and Component Modeling > > Hi Anthony, > > I've don't know the exact reasoning behind it, but in all the gerber > files I've seen, the component coordinates are to pin-1. If the design > file > had the coordinates go to the centroid, I know there would be a lot of > "happy > campers" out there! That would save another complete operation generating > a > CAD placement program...it would seem to me that the centroid location > makes > the most sense if there isn't any other reason why everybody uses pin-1. > Maybe > it's because that's the way everybody has been doing it over the > years...kinda' dumb reason, but most of us are sheep anyway > (GRIN)....B-a-a-a- > a-a-a! > > -Steve > Gregory- > > ################################################################ > TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional > information. > For the technical support contact Dmitriy Sklyar at [log in to unmask] or > 847-509-9700 ext.311 > ################################################################ > ################################################################ TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################