Patent ID: 7368666

Claim:
A surface-mounting type electronic circuit unit comprising: an insulating substrate of which wiring patterns are provided on a top surface; an electronic component that is connected to the wiring patterns; a plurality of first lands that are provided on a bottom surface of the insulating substrate; a plurality of second lands that are connected to the wiring patterns and are provided on the bottom surface of the insulating substrate; pedestal bases that are soldered to the first lands; solder bumps that are provided on the second lands, and a cover that is made of a metal sheet and covers the electronic component mounted on the top surface of the insulating substrate, wherein the insulating substrate is provided with a hole that is formed at a position of the first lands so as to vertically pass therethrough, when protrusions provided on the cover and each having a length shorter than a thickness of the insulating substrate are inserted into the hole, the portion is soldered to the first lands so that the cover is grounded to the first lands, wherein the pedestal bases are made of plate-shaped metal material having a solder film on the outer surface thereof, and are soldered so that top surfaces of the pedestal bases are positioned on the first lands, and the pedestal bases are used as a mounting reference of the insulating substrate with respect to a mother board, so that bottom surfaces of the pedestal bases and the solder bumps are soldered to the mother board.