Patent ID: 8167629

Claim:
An electronic device comprising: a substrate having a plurality of through-holes that pierce both sides of the substrate with lands formed on walls of the plurality of through-holes; and a connector having a housing made of electricity insulating material, the housing holding a part of each of a plurality of terminals, each of the plurality of terminals having another part defined as an insertion portion that is inserted in each of the plurality of through-holes, wherein the insertion portions of the plurality of terminals are inserted in respectively different through-holes to be soldered to the lands on the walls of the through-holes, the connector has a plurality of terminals in respectively, different plural kinds, each of the plurality of terminals punched out from a metal plate of predetermined thickness, the plurality of terminals have, as the insertion portions, respectively different along-the-surface cross sections that are in parallel with the surface of the substrate, conditions of W 1 <W 2 , D 1 <D 2 , and W 2 −W 1 >D 2 −D 1 are fulfilled as a relationship between the plural kinds of terminals having respectively different cross sections and the plurality of through-holes in which the insertion portions of the plural kinds of terminals are respectively inserted, when (a) W 1 and W 2 are respectively defined as widths of the insertion portions of a first and a second terminal that have respectively different cross sections in at least one of two directions along the surface of the substrate, the two directions respectively corresponding to a thickness direction of the metal plate and a cross direction perpendicular to the thickness direction of the metal plate, and (b) D 1 and D 2 are respectively defined as a hole diameter of a first and a second through-hole in which the insertion portions of the first and the second terminal are inserted, the hole diameter being measured as an inside of the land of the respective through-holes.