Chip fuse and manufacturing method therefor

A manufacturing method for the chip fuse that includes,

• an insulated substrate;
• a heat-storing layer formed on the insulated substrate;
• a fuse film formed on the heat-storing layer, the fuse film comprising surface electrode sections on both ends in a chip fuse length direction and a fuse element section between the surface electrode sections;
• and
• a protective layer formed on the fuse element section, wherein
• a rectangular bank section is formed on the heat-storing layer and the surface electrode sections in such a manner as to surround the fuse element section, the rectangular bank section has a first surface that extends vertically in a height direction of the chip fuse, and
• the protective layer is formed on an inner side of the bank section,
• the manufacturing method comprises:
• a first step of forming the rectangular bank section on the heat-storing layer and the surface electrode sections;
• and
• a second step of forming the protective layer on the inner side of the bank section, the protective layer has a second surface that extends vertically in the height direction and opposes the first surface, the second surface making contact with the first surface.