Mark, I would tend to agree with your customer rather then your CC vendor. RTV staking on top of CC seems like it would be pretty ineffective at doing what it is intended to do. We build hi-rel boards for customers that manufacture downhole drilling tools for oil exploration, RTV and epoxy staking of components is always performed before CC.... Mike -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Mark Charlton Sent: Monday, February 23, 2004 12:09 PM To: [log in to unmask] Subject: [TN] Conformal coat over RTV? My learned and esteemed colleagues, One of our customers has requested that we conformal coat over a DOW 3145 RTV adhesive used to stake some sensitive components. The specified coating material is MS470-N, a urethane product. Is this a standard practice (to coat over RTV)? We have always conformal coated the PCA and then staked the components using the RTV. Our CC vendor isn't too pleased with this request. Mark Charlton --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------