Defect Free QFN Assembly Defect Free QFN Assembly The problem with soldering QFN packages is that they float, skew and tilt on the 'domed' melted solder during the SMT re-flow process. This floating, skewing and/or tilting will lead to solder
SMT Express, Issue No. 3 - from SMTnet.com Volume 1, Issue No. 3 Wednesday, August 18, 1999 Featured Article Return to Previous Page BGA REWORK Earl Moon Proof Of Design (POD) PART INSPECTION BEFORE OPERATIONS Always inspect part
.33 means a defect rate of 60 parts per million (PPM)
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