| 摘要 |
PURPOSE:To ease soldering between a conductor pin and a through-hole by using the conductor pin with a head part which is of the same length as the depth of the through-hole, inserting it into the through-hole, dipping the rear surface of the printed- circuit board which is opposite to the side where the conductor pin is inserted into a fused solder bath, and then filling solder between the head part and the through-hole. CONSTITUTION:A conductor pin 1 has a head part 11, a collar 12, and a leg part 13. The leg part 12 is gold-plated 10. Also, the length of the head part 11 is the same as the depth of a through-hole 91. The conductor pin 1 is inserted into the through-hole 91 of a printed-circuit board 90 from the direction of an electronic parts mounting part 95. Then, with the printed-circuit board 90 where the conductor pin 1 is inserted into the through-hole, the rear surface of the printed-circuit board which is at the opposite side of the insertion side of the conductor pin is allowed to contact the upper surface of a fluxing solder bath 80. Thus, the fused solder 80 intrudes into the gap between the head part 11 and the through-hole 91 according to capillarity. In a printed- circuit board for mounting electronic parts 3, a solder 8 is filled in the area between the through-hole 91 and the head part 11 and between a land 94 and a collar 12. Then, no blow holes are generated within the solder 8. |
