Abstract:In this paper, the fabrication process of Area Array Quad Flat No-lead (AA QFN) packages was developed. The developed AAQFN128L, AAQFN256L, and AAQFN441L packages were presented in the paper with the pin counts of 128, 256 and 441, and the package size was 10x10, 15x15 and 13x13mm respectively. The reliability of AAQFN was studied extensively. And at the same time, the comparison of the mechanical, thermal properties and the cost of BGA and AAQFN packages were made with the same pin counts of 256. It was found… Show more
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