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March 2007

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Subject:
From:
"Dehoyos, Ramon" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Dehoyos, Ramon
Date:
Fri, 16 Mar 2007 12:41:01 -0400
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    Werner:
   I have noticed that some of the FP ceramics components have very soft
leads. Those leads will take all the mismatch from the two materials.
The side problem with the soft leads is that they deform so easily.
	Regards,
	Ramon

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier
Sent: Friday, March 16, 2007 11:08 AM
To: [log in to unmask]
Subject: Re: [TN] Engineering Question

Well Kenny,
Their concern may be CC racking, but could also be solder joint
failures. 
Remember, there is a huge CTE-mismatch between the ceramic CC and the
FR-4 PCB.



Werner



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