Abstract
The high-power module generates considerable heat, and its power density and life are restricted by temperature-rise. The presented integrated stack is suitable for high-power modules in a hybrid electric vehicles (HEV). It consists of Al circuits, AlN ceramic plates and Al-SiC composite plates. As the stack does not include a solder layer between a ceramic substrate and base-plate, the stack decreases the amount of lead (Pb) in the power module. Furthermore the elimination of solder brings not only lower thermal resistance but also high reliability because of elimination of solder crack. We are confident that the stacks are most suitable for high-power modules in HEV.
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