| 摘要 |
<p>A thermal fuse very quick to blow, comprising metal layers (15), (16) provided at the tip ends of a pair of metal terminals (11), having better wettability to a fusible alloy (13) than the metal terminals (11) and a first insulation film (12), and connected with the fusible alloy (13). The area (S) of the metal layers (15, 16), length (L1) and volume (V) of the fusible alloy (13), distance (L2) between the tip ends of the metal terminals (11), and a distance (d) from the bottom surface of a second insulating film (14) to the top surfaces of the metal layers (15, 16) have the relation, Sd > V (L1 + L2) / 2L1.</p> |
