Patent ID: 6363792
Filing Date: 2002-04-02
Classification: G01L

Abstract:
A pressure transducer assembly comprising:a reverse mounted dielectrically isolated semiconductor cup-shaped member including a thicker outside non-deflecting region and a thinner inside deflecting portion region for deflecting under pressure, at least one piezoresistive element affixed to but electrically isolated from the deflecting portion, said at least one piezoresistive element being on a surface of the member isolated from a media associated with said pressure, and a series of electrical contact areas on the non-deflecting region; a structure hermetically sealed to the member, and including a series of apertures aligned with said contact areas, said apertures being filled with a glass-metal frit, said member and said structure forming a composite structure; a glass header including at least one first lead, the glass header coupled to said composite structure including said member and said structure such that at least one first lead makes electrical contact with the glass-metal frit of at least one of said apertures of said structure; and, a header joined to the glass header through an intermediary sleeve, said glass header and said header being coupled to said sleeve, said header including at least one metal tube positioned such that said at least one first lead from the glass header is directed through said at least one tube, an inside diameter of said at least one tube being sufficiently large to accommodate a second lead entering in an opposite direction from said at least one first lead and having a wall thickness sufficiently thin so as to allow crimping when the said at least one first lead from the glass header and the second lead have been inserted there into to insure proper electrical contact is made between said at least one first lead and said second lead.