Doug, One of our rules was - thou shalt not put silicones in the chamber! Other than that, periodically we would use a really fine scotchbrite and clean room vac to physically clean the interior of the chamber. Then, as Joyce indicates, a nice high energy oxygen plasma to ash off any remaining organics and argon to knock off a few more offensive molecules. From a wire bonding point of view, I have found argon with 4% hydrogen to provide a slight edge on cleaning over straight argon. Not sure if that would apply to CC adhesion of not. Have you tried the arc plasma cleaners/surface activators. Can be made into an in-line process much easier than the batch type plasmas. Steve Creswick http://www.linkedin.com/in/stevencreswick -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls Sent: Friday, July 30, 2010 9:01 AM To: [log in to unmask] Subject: [TN] Plasma Chamber Maintenance Good morning all, On a topic other than rhubarb, raiding my cubicle for prizes, and selling off my children, I have an actual technical question. We have started to use plasma chambers as a preparation for conformal coating and are having some excellent results. One of our IEs, with a background in the semiconductor industry, had indicated that the chambers can be items that are hard to maintain or high in maintenance costs. So, for you plasma chamber users out there, what have your experiences been with plasma chamber maintenance? Doug Pauls ______________________________________________________________________ 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 ----------------------------------------------------- ______________________________________________________________________ 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 -----------------------------------------------------