| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a circuit board with a pin capable of normally connecting an electronic component to be mounted to an external electric circuit without easily taking a lead pin, and to provide an electronic device. SOLUTION: The circuit board with the pin comprises a pad 2b with the pin electrically connected to a wiring conductor 2 provided on a lower surface of an insulating base 1 made of an organic material having the conductor 2, and the lead pin 3 made of a copper alloy and having a substantially truncated conical large-diameter part 3b formed at an upper end of a substantially columnar shaft 3a and stood via a solder 9 interposed between the part 3b and the pad 2b. In this case, 1.8<=B/A<=2.5 and 3.4<=B/C<=4.4 are satisfied, wherein A is a diameter of the shaft 3a, B is a diameter of the part 3b, and C is a thickness of the part 3b.</p> |
