Thank you Alan, Brent and George Brent We do our own in house assembly with pick and place machines and Hot air soldering. The parrallel exit is historic and has worked very well. The information was obtained from a text book on SMT components when they were in their infancy and lays out some rules to avoid tombstones and other assembly problems. Show me da picture! George Valid point on the acid traps I will avoid this in the layout Thanks once again to all -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads