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Sn whisker has been a concern in the semiconductor industry. The whiskers will grow within few hours to months with a diameter of 1 micron up to a length of several millimeters. It is difficult to access the whisker impact for Sn plated lead frame. There are no test acceleration factors that can be established to promote a faster growth rate for the whisker. The countermeasure that generally practices...
Design of industrial annealing cycles requires recrystallization and grain growth studies, which are typically carried out under isothermal laboratory condition. The kinetics coefficients of these phase transformations are obtained from such studies, which are subsequently used in designing the industrial nonisothermal cycles using the additivity principles. However, the strong heating rate effects...
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