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November 1998

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Date:
Wed, 25 Nov 1998 12:39:10 -0600
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     Address,

     I'm using a local facility to inspect, via X-ray, 4 BGAs types.  Three
     (3) are PBGA and are easily viewed at 35 Kv.  I can not view the 4th
     package at 35Kv due to the package (basically a heatsink).  Is it
     possible to view through this package if at 90+Kv or does it not
     matter due to the package?

     Also, what are standard or the recommended Kv to use when X-raying BGA
     packages?  Please advise.

     John Gulley

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