Low-temperature die attach material

Describes the development of glasses for silver glass die attach application at temperature below 400° and as low as 260°C. It is observed that the basic principle of the nonbridging oxygen formulation mechanism can be used to design glasses in the development of new silver glass composites. These new composites were shown to perform at lower application temperatures with similar or better reliability than the original lead borate glass based silver composite. It was demonstrated that glass composition, glass transition temperature, and glass crystallization behavior were key to the ultimate performance of the composite