Showa Denko Packaging Co., Ltd.

Keiichi Yokoi

Hiroshi Hata

Daisuke Hashimoto

Takurou Watanabe

A terminal leadincludes an inner end portionto be arranged inwardly of an exterior casingwhich accommodates an electrochemistry element, an outer end portionto be arranged outwardly of the exterior casing, and a plate-shaped metallic substrateas a base material. An insulating resin filmis arranged at a portion of the terminal leadcorresponding to a seal portionof the exterior casing. In this terminal lead, a surface coating layeris formed on both surfacesandof the metallic substratein a thickness direction thereof. A coated amount of both widthwise end portionsandof the surface coating layerformed on both surfacesandof the metallic substratein the thickness direction is less than that a widthwise intermediate portionthereof.

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Minato-ku, Japan

Keiichi Yokoi