Well then it wouldn't be a copper defined land anymore, it would be a solder-resist defined land instead. Wouldn't it??? Richard - see IPC-A-600G 2.9.3.2 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: March 30, 2007 10:16 AM To: [log in to unmask] Subject: Re: [TN] Solder Resist Encroachment onto BGA pads Where does it say that it is not allowed? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Paymon Sani Sent: Friday, March 30, 2007 11:02 AM To: [log in to unmask] Subject: [TN] Solder Resist Encroachment onto BGA pads Hello All, Does anybody know why IPC does not allow any solder resist encroachment onto the BGA copper defined lands for PCBs? --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 -----------------------------------------------------