A power semiconductor device

A power semiconductor device comprising: an outer housing (11); at least one press-in pin (31) which is embedded in an upper surface of the outer housing (11); and a plurality of support portions (51) formed to protrude from the upper surface of the outer housing (11). An upper end of the insert pin (31) is further than upper surfaces of the support portions (51) of the upper surface of the outer housing (11).