| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring board with a pin and an electronic apparatus where the lead pin is hard to come off and a mounted electronic component can be connected to an external electric circuit normally. SOLUTION: The wiring board with the pin, where a pin installation pad 2b electrically connected to a wiring conductor 2 is provided on a lower surface of an organic material based insulating substrate 1 having the wiring conductor 2, and the lead pin 3 constituted so as to form a generally disc-shaped large diameter part 3b on the upper end of a generally cylindrical axis part 3a is stood on this pin installation pad 2b by interposing solder 9 between the large diameter part 3b and the pin installation pad 2b, is characterized in that when the diameter of the large diameter part 3b is A and the diameter of the axis part 3a is B, the relation between A and B is 1.8<=B/A<=2.5, and the side surface of the large diameter part 3b has a generally outwardly bulging circular arc shape when viewed from the side. |
