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Power electronics modules are semiconductor components that are widely used in airplanes, trains,automobiles, and energy generation and conversion facilities. In particular, insulated gate bipolar transistors(IGBT) havebeen widely utilized in high power and fast switching applications for power management including power supplies,uninterruptible power systems, and AC/DC converters. In these days, IGBT are the predominant power semiconductorsfor high current applications in electrical and hybrid vehicles application. In these application environments, the physicalconditions are often severe with strong electric currents, high voltage, high temperature, high humidity, and vibrations. Therefore, IGBT module packages involves a number of challenges for the design engineer in terms of reliability. Thermaland thermal-mechanical management are critical for power electronics modules. The failure mechanisms that limit thenumber of power cycles are caused by the coefficient of thermal expansion mismatch between the materials used in theIGBT modules. All interfaces in the module could be locations for potential failures. Therefore, a proper thermal designwhere the temperature does not exceed an allowable limit of the devices has been a key factor in developing IGBTmodules. In this paper, we discussed the effects of various package materials on heat dissipation and thermal management,as well as recent technology of the new package materials.

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