If it is a new QFP with the pure copper/very high copper leads then I wouldn't worry about it.  Those leads are so compliant they can absorb amazing amounts of stress.

Wayne Thayer

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson
Sent: Monday, January 14, 2013 11:36 AM
To: [log in to unmask]
Subject: [TN] Mounting Hardware to QFP Component Lead

To the assembly professionals out there:

Have you ever had reliability issues with mounting screws if they are near a Quad Flat-Pack? My 144 pin land pattern is pretty close (100mils) but we are mounting the board into a very flat structure (no bowing) I can't imagine the compression of the board material could affect gull-wing style lead connections (maybe BGA?) but I don't know...

thanks,
Jack


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