According to examples of failure analysis, a new method of renovating used imported integrated cir鄄
cuit was found that comprises rewelding the outer leads of the used one as a “new冶one after simple surface treatment,
by utilizing SEM, EDS and metallographic analysis. It is pointed that such failure mode is always found during the us鄄
age and has characteristic in batch which has the very seriously potential damage. It is considered that the process of
domestication of imported integrated circuit should be accelerated while the purchase channels and quality require鄄
ments should be strengthened in order to further improve the quality and reliability of aerospace products.