| 摘要 |
PURPOSE:To prevent the deformation of a dam when a package is molded and to prevent the deformation of inner leads and outer leads accompanied by said deformation, by linking supporting pieces to the dam, thereby supporting the dam against pushing force of a molding material at the time of package molding. CONSTITUTION:Supporting pieces 10 are linked to a dam 6 so as to prevent the deformation of the dam 6 when a package is molded. Therefore, even if the tips of outer leads 5 are not connected to an outer frame 7, the pushing force of a molding material, which is applied to the dam 6 at the time of package molding, can be sufficiently supported because the supporting pieces 10 are linked to the dam 6. Since the dam 6 is not deformed by the pushing force of the molding material, the deformation and the like of the outer leads 5 accompanied by the deformation of the dam 6 are avoided beforehand.
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