At 05:32 PM 3/1/2009, you wrote:
>Werner,
>
>If I may ask, what would be the benefit of the ceramic core?  CTE 
>match to ceramic packages?

yes, could be for mechanical properties

Also is used for electrical (higher Er = smaller circuit) and thermal 
properties (e.g. thermal dissipation or high continuous op temp under PA's).

>Steve
>
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