The uniform and thin film was required without crack for end termination without crack. The paste required proper viscosity and rheological properties for plate-dipping, belt-dipping process. In this study, we discussed the film appearance, paste viscosity and resistivity with the size of flake and /or powders and flake aspect ratio. As the result, it was found the most important to obtain dense, uniform and thin termination was usage of was using high dispersed flake to obtain dense, uniform and thin termination. The viscosity of wide distribution with large size of copper powder (MA-CF, MA-CF(E)) was higher than YP series (almost same specific surface area) at same concentration of copper powder. It was difficult to obtain high concentration paste with broad distribution copper powder (MA-CF, MA-CF(E)). It was able to prepare high concentration paste and dense film with YP series. The viscosity of the paste depends on size particle and flake aspect ratio.
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