| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide electronic parts which are capable to be easily and surely coupled to an electrode of circuit board by a solder, and provide the electrode of circuit board which is possible to be downsized. SOLUTION: A connector 1 that is an electronic parts, is soldered to the electrode 8 arranged on a surface of circuit board 7 and is surface mounted. A junction 4 of terminal 3 is formed to a round pillar shape, and the electrode 8 on the circuit board 7 is formed by nearly the same width as that of junction 4. According to the electronic parts of the present invention, the solder 9 gets into the gap between the junction 4 and the electrode 8, and the junction 4 and the electrode 8 are strongly jointed because the junction 4 is formed to the round pillar shape. In addition, since a ring-shaped groove part 5 is installed at the junction 4, the fused solder 9 is impregnated into the groove part 5 and turn around to the whole circumference of junction 4, so that the solder 9 cures at this state and the junction force between the junction 4 and the electrode 8 is further reinforced.</p> |
