| 摘要 |
<p>In a conventional surge absorbing device, disc-like electrode plates (3a, 3b) are soldered to the surface of an electrode (2) of a varistor (1) and external terminals (4a, 4b) are extended from the end portions. In contrast, in a surge absorbing device of the present invention, the electrode (6) of a varistor (5) has surfaces on which electrode plates (7a, 7b) are soldered. These plates include slits (9) cut substantially in a radial direction and external terminals (8a, 8b) extending substantially from the center thereof. In the surge absorbing device of this invention, since the external terminals (8a), (8b) are extended from the center, the electrode plates (7a), (7b) come into uniform contact with the electrode (6) and good soldering can be obtained. At the same time, a current density inside the varistor becomes uniform so that satisfactory high resistance to a surge current can be obtained.</p> |
