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A Study of Thin Metal Film Formation on LTCC Substrate
Keywords: Post electrode, Microwave sintering, LTCC
This study is focused on the effect of the surface properties for the post electrode, which is used in pad formation consisted of SMT such as IC, passive component, combined with fired LTCC substrate, We carried out the surface microstructure of sintered electrode and the basic reliability evaluations with sample fired by microwave sintering to solve the problems occurred in post electrode by electric sintering. We evaluated surface densification status of post electrode according to various conditions of microwave sintering. In additions, it is obtained strong effect on blister improvement of post electrode because of over-sintering and the insufficient out gas in burn out process. As a result of adhesion strength, we confirmed 44.3N/mm2 in microwave sintering and 34.5N/mm2 in electric sintering, respectively. This result will be used for the basic reliability test. Finally, microwave sintering seems to be economic in process time with 30 min compared to electric sintering with 10 hr. In terms of Mass production and efficiency, microwave sintering are excepted to be higher than electric sintering.
Mr. Yong-Suk Kim,
Samsung Electro-Mechanics Co., Ltd.
Suwon, Kyung Gi Do 443-743,
South Korea


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