Attached file is Final FA report relate “Auto turn on when insert battery” of SM5504. 1ea unit samples at July 21th from SEVT were returned to Silicon Mitus due to SM5504 of “Auto Turn On when insert Battery” at J120. There were no find abnormalities points in the manufacturing process and shipping history about returned material from SEVT. There was no detected abnormality point on external visual inspection step of package using high power microscope (X 1,000). It was performed final test using currently mass production test program. 2ea parameters (JIG leakage) were failed relate JIG pin. Physical analysis: Couldn’t find hard defect point or abnormality point under layer by layer de-processing analysis. It’s concluded that analysis results (Incoming inspection, Final Test & delayering analysis) of SM5504 returned material from SEVT, it was suspected device mal-function due to ESD damage from unknown external source.
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