All,

        Do any of you use some kind of pin 1 indicators built into your smd pads
?
For example using a pad with an extra tab or an oblong pad.
        Could you please tell me why this is done at your company and if you
have had any problems
with fabricators testing these designs ?

        Background:
        Yes, we add tabs on pin 1 pads at Harris. We have had problems with
some testing houses on fine pitch devices because the offset in this pad can
cause the test
probe to not hit the pad properly. We are considering alternatives but would
like to hear what
other companies think and do.


        Regards,

                Jerry Schwartz, CID
                IPC Certified Interconnect Designer
                "May the Schwartz be with you"

Jerry Schwartz, CID             Designer 3
Harris Corporation GCSD         Voice (321)-727-5474
P.O. Box 37, MS 1/9843          Fax   (321)-729-5990
Melbourne, FL 32902-0037        Pager (321)-690-9797
mailto:[log in to unmask]
http://harris.com

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