We have experienced some issues with ceramic filters. The main problem is plating adhesion. We have seen a clean break between the plating and the ceramic on drop test failures (2 to 10%) that had not occurred previously. Our vendor looked into the issue and recommended making the ceramic harder to allow for more etching time. This did not eliminate the issue but increased brittleness. We will be visiting the vendor to review the process and possible improvements. What are the key aspects of the ceramic and plating processes that we should focus on? Are there minimum values or tests that should be met in this process? Any guidance in this issue is appreciated. Tim Oaks --------------------------------------------------- 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 -----------------------------------------------------