Phil,

I reviewed the 610D and I do not believe it is covered. Section 10.2.4
Haloing and Edge Delamination comes the closest.  I believe you are
going to have to determine your own criteria.  We typically design our
breakaway tabs with internal mouse bites.  That way the roughness is not
on the edge.  

Russell Nowland
Alcatel-Lucent           
Supply Base Engineer
Address: 14000 Quail Spring Parkway, Suite 300
Oklahoma City, OK 73134
email: [log in to unmask]
Desk: 405-302-1660
Cell: 405-203-0034
Fax: 405-302-1622
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phillip Bavaro
Sent: Tuesday, March 20, 2007 11:01 AM
To: [log in to unmask]
Subject: [TN] Panel tab breakoff burrs

I am on travel and don't have a copy of IPC-A-610 with me.

What is the inspection criteria for a circuit card assembly break off
tab 
after it has been severed from the panel?

In a perfect world, the area where the tab formerly was, would be
perfectly 
flat, but that is not always the case, and we certainly don't want to
see 
operators using a file on the assembly in order to get rid of the burr.

BTW, these are thin but solid tabs and not the ones that are intended to

break apart due to drilled holes (perforations).

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