Dear Technos, We need to clean the ACF bonder from a fair quantity of boards (about 1K/ month). The material to clean is Hitachi Anisolm, per the specification below (unfortunately there's not much in this spec) http://lituo.testmart.cn/Images/UpLoadForderElse/2009_12_30_13_38_38_4939.pdf <http://lituo.testmart.cn/Images/UpLoadForderElse/2009_12_30_13_38_38_4939.pdf> We have been suggested to use a 48 hour soak in 1-Methyl-2-Pyrrolidinone, followed by an acetone cleaning. It is only the bonding contacts that are immersed in the methyl-pyrr..., but the level of substance is only 2 mm away from an overmolded die-attach. The acetone cleaning is local on the contacts. First question would be: are the above chemicals OK for this usage? Board is FR4, with gold-plated contacts. Second question would be: what else could we use to remove the bonder? Manufacturer seems to recommend Dow Corning OS-20, but we were told by our customers it does not exactly work. Thanks, Ioan Tempea, ing. Ingénieur Principal de Fabrication / Senior Manufacturing Engineer T | 450.967.7100 ext.244 E | [log in to unmask] <mailto:[log in to unmask]> W | www.digico.cc <http://www.digico.cc/> N'imprimer que si nécessaire - Print only if you must ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- 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 -----------------------------------------------------