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    • 3. 发明申请
    • A VARISTOR AND PRODUCTION METHOD
    • 变异和生产方法
    • WO2007046076A1
    • 2007-04-26
    • PCT/IE2006/000114
    • 2006-10-19
    • LITTELFUSE IRELAND DEVELOPMENT COMPANY LIMITEDMCLOUGHLIN, NeilO'DONOVAN, Michael
    • MCLOUGHLIN, NeilO'DONOVAN, Michael
    • H01C7/102
    • H01C7/102
    • A varistor has a disc (12) of ceramic material having opposed faces with face edges. There is an electrode (13) on each face with a gap between each electrode (13) and the edge of the face. Glass passivation (14) is on at least one face in the gap, the passivation (14) not extending from one electrode to the other electrode around the surface of the disc (12). Because the passivation is only on the planar opposed disc faces, it may be applied in a simple operation such as screen printing. Indeed, the screen printing may be performed while the discs are in the same nest plates as are used for printing of electrode paste. Even though the passivation does not extend from one electrode to the other, it nevertheless breaks a potentially conductive path between the electrodes caused by interaction between the ceramic and encapsulant materials.
    • 变阻器具有带有面边缘的相对面的陶瓷材料盘(12)。 每个面上都有一个电极(13),每个电极(13)和面部边缘之间都有间隙。 玻璃钝化(14)位于间隙中的至少一个面上,钝化层(14)不会从圆盘(12)的表面周围的一个电极延伸到另一个电极。 因为钝化仅在平面相对的盘面上,所以可以在诸如丝网印刷的简单操作中施加钝化。 实际上,可以在盘与用于印刷电极浆料时相同的嵌板中进行丝网印刷。 即使钝化不从一个电极延伸到另一个电极,但是它仍然破坏由陶瓷和密封剂材料之间的相互作用引起的电极之间的潜在传导路径。