| 摘要 |
PURPOSE:To input and output a signal stably and surely by a method wherein an insulating substrate and a lid body are formed of an Al2O3 sintered substance, an external lead terminal is formed of a metal whose coefficient of thermal expansion is specific/ deg.C and whose electric conductivity is specific % or higher and a glass member is formed of PbO2, ZnO, SiO2 and alumina which are respectively at specific %. CONSTITUTION:Recessed parts which form a space used to house a semiconductor element are formed in respective central parts of an insulating substrate 1 and a lid body 2; the semiconductor element 5 is attached and fixed to the bottom of the recessed part of the substrate 1 via an adhesive such as a resin, a glass, a brazing agent or the like. A coefficient of thermal expansion of an aluminum oxide sintered substance used to form an insulating container is 65 to 75X10<-7>/ deg.C; glass members 6, for sealing use, which are applied to opposite main faces of the substrate 1 and the lid body 2 are formed of a glass which is composed of the following: 60.0 to 80.0wt.% of lead oxide; 5.0 to 20.0wt.% of boron oxide; 5.0 to 20.0wt.% of zinc oxide; 1.0 to 10.0wt.% of silica; and 1.0 to 10.0wt.% of alumina. Thereby, even when the semiconductor element housed inside the insulating container is operated at high speed, a signal is input and output stably and surely between the semiconductor element and an external electric circuit. |
