Hello All- Recently I was away on Holiday and when I came back....there was a Branson Utlrasonics system being used to clean our newly assembled PCB's. The machine is a standard ultrasonics (parts cleaner I call it) bath using a general cleaner/degreaser. Facts: Our process is: - No clean - double sided - mix technology - Discrete (tants, Chips resistors) - BGA's - QFPs - PLCC's - ASICS - Connectors - Headers - Electrolytic Caps Concerns: - Ultrsonics damaging internals on IC's - Residues left after cleaning - Effects on Programmable IC's - .....Just General over all reliability. I have huge concerns on the over all cleanliness and reliability. Any info supporting or declining this is of interest. Thanks in advance, Cal Caldon Driscoll Program Manager, Circuit Board Manufacturing CTDI 1373 Enterprise Drive West Chester, PA 19380 610-793-8098 WWW.CTDI.COM --------------------------------------------------- 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 -----------------------------------------------------