Barbara, The only 2 forms of conformal coating I have had any experience with are Humiseal and a Acrylic Conformal coat that I cannot remember the name of... The difference is, the Acrylic was rework-able and the Humiseal was permanent. Maybe someone else has more they can tell you... Best regards, Bill Brooks - KG6VVP PCB Design Engineer, C.I.D.+, C.I.I. Tel: (760)597-1500 Ext 3772 Fax: (760)597-1510 Datron World Communications, Inc. _______________________________________ San Diego Chapter of the IPC Designers Council Communications Officer, Web Manager http://dcchapters.ipc.org/SanDiego/ http://pcbwizards.com -----Original Message----- From: Barbara Burcham [mailto:[log in to unmask]] Sent: Monday, May 16, 2005 2:56 PM To: [log in to unmask] Subject: [TN] Conformal Coating of Assembled Boards Well, my company now has an application requiring conformal coating on some small assembled boards. We need to mask off 3 connectors and coat everything else. I have some information on a product called Parylene applied by Parylene Coating Services, Inc. in Katy, Texas. We did a small lot with a simple spray-on process, but that is not the way to do production runs, of course. What would you recommend? Thanks, Barbara Barbara J. Burcham, C.I.D. Fairfield Industries, Inc 281-275-7687 [log in to unmask] --------------------------------------------------- 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 -----------------------------------------------------