发明名称 |
Zinc oxide varistor and method of manufacturing same |
摘要 |
A precipitate film having plating resistance may be formed on the surface of a varistor element during sintering process. Accordingly, the manufacturing process can be shortened, thereby improving the productivity. The manufacturing method comprises (a) a first process of forming the varistor element whose main component is zinc oxide; (b) a second process of sintering the varistor element and precipitating zinc compound having at least one of acid resistance and alkali resistance on the surface of the varistor. Preferably, the manufacturing method further comprises (c) a process of attaching an external electrode to the varistor element, and the external electrode attaching process is executed after finishing the varistor element sintering process.
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申请公布号 |
US6749891(B2) |
申请公布日期 |
2004.06.15 |
申请号 |
US20020196939 |
申请日期 |
2002.07.18 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SHIRAISHI KAORI;INOUE TATSUYA;SASAKI RIHO;NOI KEIICHI;TOKUNAGA HIDEAKI |
分类号 |
H01C7/102;H01C7/112;H01C17/065;H01C17/28;(IPC1-7):B05D5/12;H01C17/00 |
主分类号 |
H01C7/102 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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