HI,
        WE HAVE AN ISSUE HERE THAT NEEDS SOME CLARIFICATION.  WE'VE BEEN
     BUILDING FIDUCIALS FOR 4 YEARS NOW THAT HAVE NOT HAD SOLDER PASTE ON
     THEM (NO RELIEFS IN THE PASTE MASK).  NOW OUR VENDORS, (YES THE SAME
     ONES WHO HAVE BEEN BUILDING THE BOARDS FOR 4 YEARS), ARE SAYING THAT
     THEY'VE ALWAYS PUT SOLDER PASTE ON THE FIDUCIALS.  THE FIDUCIALS IN
     QUESTION ARE GLOBAL BOARD FIDUCIALS.
        MY QUESTIONS ARE;
     1. WON'T THE SOLDER PASTE, (PRE-REFLOW), LACK CONTRAST/REFLECTIVITY?
     2. WHAT PURPOSE DOES SOLDER PASTE SERVE ON THE FIDUCIAL?


                                        THANKS,
                                                ROB


     ROBERT BUTTERWORTH
     CAD DESIGN ENGINEER<-----WHAT THE HELL IS THIS?
     ADC BROADBAND COMMUNICATIONS
     11 FAIRFIELD BLVD
     WALLINGFORD, CT 06492

     203-630-5755

     [log in to unmask]

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