Patent ID: 6078101
Filing Date: 2000-06-20
Classification: H01L,H05K

Abstract:
A high-power microwave hybrid integrated circuit comprising package-free semiconductor devices 5 with contact pads, a dielectric substrate 1 containing holes 3 and a topological pattern on its front side and a shielding metallization 2 on its opposite side, a metallic header 4 with projections 6 adjoining the shielding metallization 2 of the dielectric substrate 1 and passing through the holes 3 thereof, said semiconductor devices 5 being mounted on the projections 6 of the header 4 such that their surfaces with contact pads flush level with a front side of the dielectric substrate 1, a part of said contact pads being connected to the topological pattern of the metallization and a part thereof being connected to the projections 6 of the header 4, characterized in that the metallic header 4 is provided with the holes 3 where its projections 6 are mounted, said projections 6 being fabricated in the form of inserts rigidly secured in said holes 3 and made of material having a thermal conductivity coefficient which is greater than the thermal conductivity coefficient of material of the metallic header 4.