| 摘要 |
PROBLEM TO BE SOLVED: To prevent faulty solder. SOLUTION: The terminal metal fitting 10 is provided with a terminal body 11 inserted into a through hole 61 and passing through solder 40 in a circuit board 60 on which the solder 40 containing tin as a major ingredient is so printed as to cover the opening of the through hole 61. A first plating layer 31 formed by plating from a metal exhibiting a lower wettability than tin (Sn), nickel (Ni), for example, is formed on the end of the terminal body 11 in the direction of its insertion. A second plating layer 32 formed of tin (Sn) plating is formed in the part of the surface of the terminal body 11 except the end in the direction of its insertion. COPYRIGHT: (C)2011,JPO&INPIT
|
