| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To ensure electrical connection reliability of an electronic component to be mounted on a bus bar while ensuring heat radiation of a portion where the bus bar is fixed, by employing solder connection having high heat radiation for connection between copper foil pattern and the bus bar, in a circuit material in which the bus bar is fixed on the copper foil pattern to increase a permissible current. <P>SOLUTION: In the circuit material to be housed in an on-vehicle electrical connection box, the bus bar having a width not more than the width of the copper foil pattern is fixed on at least one part of the surface of the copper foil pattern of a printed board via a high melting point solder, an electric component is mounted on the printed board with a low melting point solder, the electric component is made of a through-hole or surface-mounting relay or fuse, a first terminal to be connected to a large current side of the relay or fuse is connected to a portion where the bus bar is stuck, and the other second terminal is connected to only the copper foil pattern. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
