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April 2008

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Subject:
From:
Tim Oaks <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Tim Oaks <[log in to unmask]>
Date:
Mon, 28 Apr 2008 08:38:39 -0500
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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

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