CR05B0041Preliminary Failure Analysis ReportI. AOS Report FA No: CR05B0041 Customer FA No: Requested By: Tzu Wei Chen Part Number: AO4406 Package Type: SOP-8 Customer: Report Date: May 22, 2005 Manager: Fred Chang FA Engineer: Zhiqi Wang II. Product Information No. of Unit returned: 1 MOSFET Type: III. Customer Information Customer Return Date: May 20, 2005Reason(s) for return: AO4406 G-D-S short. IV. Initial Observation Product Status: Mass Production Functional Failure Occur During: n/a Failure Found At: multi-reel Total No. of units failed: 1 Same Date Code?: Yes Application: DC-DC Manufacture Failure Occur During: Light-Load Total No. of units used: 8 Failure Rate(ppm): 125000 Did the circuit work again after replacing the failed unit with another part?: YesFAE Comments: Per Frontek's inf……