| 摘要 |
<p>PURPOSE: To obtain a laminated varistor having high surge current withstand by providing an invalid layer, which does not contribute to varistor function, inside the sintered body which is formed by alternately laminating a varistor layer and an internal electrode. CONSTITUTION: A green sheet, on which an inner electrode 2 is printed, is laminated on varistor layers 1a and 1b, and a green sheet, on which the inner electrode is not printed, is laminated on an invalid layer 3. After the above- mentioned layers have been thermocompression-bonded, they are formed into green chips by cutting them into the prescribed shape, they are fired at 1100 deg.C for two hours, silver/palladium paste is spread and baked at 600 deg.C on both edge faces as outer electrode material, and an outer electrode 5 is formed. By providing the invalid layer 3 as above-mentioned, the breakdown by surge current in the center part can be prevented, and surge current withstand can also be increased.</p> |
