Patent ID: 7491583

Claim:
A fabrication method of a power module, comprising steps of: providing a metal plate and defining a pattern on said metal plate; cutting said metal plate according to said pattern to form a plurality of pins and a heat-conducting plate, wherein said pin is coupled to each other or to said metal plate via a connection part and said heat-conducting plate is coupled to said connection part via a fixing part; bending a first end of said pin to form an extension part and bending said fixing part to dispose said heat-conducting plate and said metal plate at different levels; providing a circuit board with a plurality of via holes and inserting said extension part into said via hole correspondingly and fixing said pin on said circuit board; forming a housing to encapsulate said circuit board therein, wherein said heat-conducting plate is inlaid on said housing and a second end of said pin is extended out of said housing; and cutting said connection part and said fixing part to separate said pin from each other and from said metal plate and isolate said pin and said heat-conducting plate.