Another unofficial term is 'potato chip' to describe either condition. Hmm, reminds me that it's just about lunchtime <g>. You could also describe the BGA laminate as convex or concave.... Mike McMonagle Quality Manager OYO Geospace 7007 Pinemont Drive Houston, TX 77040 Ph 713-986-8650 Fx 713-986-8725 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of arnaud grivon Sent: Monday, March 06, 2006 11:44 AM To: [log in to unmask] Subject: [TN] Warped BGA - Terminology Hello TechNet, What word or expression would you use to describe a warped BGA having: 1- elongated corner joints ("smiling") 2- elongated middle joints ("frowning") Although the words into brackets are explicit, they look unofficial and non-technical. Please provide me with more "official" alternatives. Best regards. --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------