| 摘要 |
PURPOSE:To prevent deviation between a package and header to improve moisture resistance, by partly providing projections and grooves on the header and lead part covered with a package. CONSTITUTION:A pellet 2 is fixed on the center of an end of the header 1. Two circular grooves 3 with concentricity are provided on the upper surface of the header 1 so as to surround the pellet 2. The upper and lower surfaces of the header 1 and leads 4-6 covered with the package 8 respectively have the projections 12 which function as dampers encroaching on the part close to the both ends of the package 8. Thus, deviation or crack do not occure between the package and header to improve moisture resistance. |
