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March 2010

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Subject:
From:
"McGlaughlin, Jeffrey A" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, McGlaughlin, Jeffrey A
Date:
Tue, 2 Mar 2010 15:56:21 -0500
Content-Type:
text/plain
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Just a guess, but it looks like they are dealing in the high GHz switching frequency range and are trying to eliminate trace induced parasitic from their signals. 

Jeffrey A McGlaughlin, CID
Engineering Designer
Battelle
505 King Ave
Columbus Ohio 43201-2693
Phone (614)424-7582
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Tuesday, March 02, 2010 2:52 PM
To: [log in to unmask]
Subject: [TN] Unusual Assembly Requirement...


Hi All,

 

I came into work today and saw something that I've not seen before. Keep in
mind that the area shown is about ½" square, and that these are 0402's.

 

http://stevezeva.homestead.com/files/Quad_Stack.JPG

 

This was done using two reflows, and the caps were not touched by a
soldering iron. 

 

You may ask why. It's because it's what we were asked to do by our customer.

 

We have a very talented lady working on the production floor who
accomplished this.

 

Steve


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