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July 2014

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Subject:
From:
"Bush, Brien" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bush, Brien
Date:
Thu, 17 Jul 2014 10:37:34 +0000
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We use local fiducials frequently with all fine pitch, especially .4mm BGA's. If problems arise, that is one variable eliminated.


B. Bush

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bill Noel
Sent: Thursday, July 17, 2014 6:31 AM
To: [log in to unmask]
Subject: [TN] Local Fiducials

Are local fiducials (those specifically associated with a single fine-pitch device) necessary anymore?  I've been told by a rep from our Assy CM that they're not necessary anymore with the advent of high-tech pick and place machines.  We've actually been designing some boards with .4mm pitch BGA's  Does this fine of pitch still not require fiducials?  Thanks in advance for the response.
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