Hydrophobic sealing materials for harsh environmental electrical connector package applications

Abstract

Abstract A highly hydrophobic sealing material system has been developed using high-temperature melt-quenching and sintering technologies for harsh environmental electrical connector package sealing applications. The sealing material properties can be varied by its phase structures, such as amorphous glass, crystalline monoclinic and tetragonal mixed phase, and covalent bond tetragonal phase, which are determined by a two-stage synthesizing process. The dilatometer measurements have found that the ambient coefficient of thermal expansion varies from ~5.8 to 7.1 ppm/°C while the coefficient of thermal expansion at its glass transition temperatures varies from ~7.0 to 9.0 ppm/°C. These coefficients of thermal expansion could provide not only wide options for integrating metal materials, such as Ti-alloy, Kovar, Inconel alloys, and Stainless Steels for making reliable electrical connector packages, but also enable the design of electrical connector packages with a safety factor of 3 performance, operable at 30KSI (30,000 PSI) pressure, and −100 −300°C harsh conditions while maintaining at least 5,000MΩ insulation resistances, for reliable signal, data, and electrical power transmissions.