Patent ID: 7825677
Filing Date: 2010-11-02
Classification: G01R

Abstract:
1. A test jig for testing electrical characteristics of a high frequency semiconductor device including a package and having, accessible at the package, a ground electrode and a high frequency signal electrode, the test jig comprising: a test circuit substrate including an insulating substrate having top and bottom surfaces, a ground conductor located on said bottom surface of said insulating substrate, and a high frequency signal wiring located on said top surface of said insulating substrate; a grounding block disposed on said top surface of said insulating substrate and electrically connected to said ground conductor through said insulating substrate, said grounding block including a high frequency signal contact pin fixedly disposed on and protruding outward from said top surface of said insulating substrate, parallel to and spaced from said side surface of said grounding block, and connected to said high frequency signal wiring, said high frequency signal contact pin having a top surface making an electrical connection to the high frequency signal electrode of the semiconductor device during testing of the semiconductor device using said test jig, wherein said side surface of said grounding block includes a protruding portion protruding outward, toward said high frequency signal contact pin, relative to remaining parts of said side surface of said grounding block, from only part of said side surface, extending along part of the longitudinal direction of said grounding block, from said top surface of said insulating substrate to said top surface of said grounding block, and having a protruding side surface that faces and is parallel to said high frequency signal contact pin; and an insulating material disposed between said protruding portion of said side surface of said grounding block and said side surface of said high frequency signal contact pin.