All the circuit boards we purchase have the part number in the form of artwork. For serialization, We used Computype rectangular barcode labels. Then to save space, we switched to a smaller square label. Now we use Laser etchers from GSI Lumonics and ASYS (www.asys-llc.com). Between labels and laser etch, I prefer laser etch. (I do not know if the label or adhesive can survive in a reflow oven). ____________________ Rama Vemulapalli Process Engineer Delphi-Delco Electronics Systems 3224 Davison Road Flint, MI 48556 Phone (810) 257-5119 Pager (810) 812-7275 Fax (810) 257-5338 [log in to unmask] _____________________ --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------