Gil, Hello. I have not heard of any restriction or problems applying c/c to the tops of BGAs however, this does not coat the solder joints (SJs) located under the BGA package, which is required by IPC-A-610. So, c/c BGAs does not apply c/c to the actual SJs located under the package, which violates IPC-A-610 acceptability requirements. We have used various wickable underfills to seal SJs located under BGA packages. joe -----Original Message----- From: Zilber Gil [mailto:[log in to unmask]] Sent: Monday, March 27, 2006 8:17 AM To: [log in to unmask] Subject: [TN] Conformal coating and BGA Hello All, Are their any restrictions of applying conformal coating on BGA components (Mil, Jedec, etc.)-i.e. on top of the BGA, avoiding underneath it, etc.? Thanks, Dr. Gil Zilber Technologist, Elta system Ltd. Tel. +972-8-8577240 Mobile +972-54-4983222 http://www.iai.co.il/site/en/iai.asp?pi=17887 The information contained in this communication is proprietary to Israel Aircraft Industries Ltd. and/or third parties, may contain confidential or privileged information, and is intended only for the use of the intended addressee thereof. If you are not the intended addressee, please be aware that any use, disclosure, distribution and/or copying of this communication is strictly prohibited. If you receive this communication in error, please notify the sender immediately and delete it from your computer. Thank you. This message is processed by the PrivaWall Email Security Server. --------------------------------------------------- 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 -----------------------------------------------------