| 摘要 |
PURPOSE:To prevent deterioration of the characteristics of a semiconductor device by filling insulator powder over a semiconductor element in a container and shielding alpha ray irradiation to the surface of the element. CONSTITUTION:A semiconductor element 2 is secured to a ceramic container 1, a kovar external connecting terminal 3 is contacted with a ceramic wall 4 and the container 1, connected to an internal wire 9, and an aluminum wire 5 is connected between the element 2 and the terminal 3. Further, a cover 6 is adhered to the wall 4 by low melting point galss 8 or the like. Powder 7 such as Al2O3 or the like is filled in the container to shield the alpha ray irradiated from the sealing material 8. This configuration can prevent the damage of the memory information of the element. |
