| 摘要 |
<p>To realize a protection member that makes a flux amount applied on a fusible conductor uniform, and improves variation of fusing characteristics because, when a projection portion of a cover member is arranged alone on the fusible conductor, the projection portion is not sufficient to hold flux on the fusible conductor, and the variation is caused in the fusing characteristics. The protection member includes an insulating substrate (11), a heating body (14), an insulating member (15), two electrodes (12), a heating body internal electrode (16), a fusible conductor (13) layered from the heating body internal electrode (16) to the two electrodes (12), and configured to fuse a current path between the two electrodes (12) by heating, flux (17) applied on the fusible conductor (13) to superimpose with the heating body (14), and a cover member (1) covering at least the fusible conductor (13) and attached to the insulating substrate (11). The cover member (1) further includes a plurality of cylindrical projection portions (2) facing the heating body (14) and formed on an inner surface (1a) of the cover member (1) to be in contact with the flux (17).</p> |
