Heat dissipating electrical apparatus

摘要

A heat dissipating electrical apparatus (200) comprises a heat dissipation device (30) mounted to a substrate (99) and fastened to an electrical device (21) mounted on a daughter board (20) received in an electrical connector (10). A plurality of first heat dissipation fins (34) are formed in a matrix arrangement and extend from a main body (31) of the heat dissipation device (30). Two second heat dissipation fins (35) extend from opposite lower corners of the main body (31) of the heat dissipation device (30). The second fins (35) each define holes (36) in free ends thereof corresponding to holes defined in the substrate (99) for receiving fixing elements (40) to stably mount the heat dissipation device (30) to the substrate (99). Alternatively, the second fins (65) extend from an entire lower portion of the main body (61) of the heat dissipation device (60). The second fins (65) are sandwiched between retaining bars (55) and the fixing elements (50) is received in holes (66) defined in each of the outermost second fins (65), the retaining bars (55), and the substrate thereby stably mounting the heat dissipation device to the substrate (99) without exerting a significant force on the electrical connector (10). Therefore, interference with signals of the electrical device is prevented.