Fiducial clearance
 
Thanks.   
 
Is there a clearance from global fiducials to other geometries?  I looked at SMEMA FIDUCIAL MARK STANDARD Standard 3.1, but it doesn't say anything about it.
-----Original Message-----
From: Cyker, Howard A (Howie) [mailto:[log in to unmask]]
Sent: Friday, April 11, 2003 2:32 PM
To: 'TechNet E-Mail Forum.'; 'Adair, Bret'
Subject: RE: [TN] Fiducial clearance

Bret,
 
It depends on how you're processing the board, and on what equipment.  Typically, the equipment vendor's will specify this.  5mm is often a typical value.  Some equipment manufacturers offer a 3mm option if that is required.

Howard A. Cyker
Lucent Technologies
Engineering Infrastructure - New Product Engineering

-----Original Message-----
From: Adair, Bret [mailto:[log in to unmask]]
Sent: Friday, April 11, 2003 5:22 PM
To: [log in to unmask]
Subject: [TN] Fiducial clearance

What clearance is recommended from a fiducial and the board edge?

Bret

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