Method of connecting internal silver traces to external gold to produce a gold external side metal for an LTCC package

摘要

A method of connecting internal silver traces to external gold to produce a gold external side metal for a low-temperature co-fired ceramic package includes the deposition of a ruthenium dioxide cermet barrier layer between layers of gold and silver. An LTCC package constructed in accord with the inventive method has gold, ruthenium and silver layers that are parallel to the LTCC package surface and normal to and also electrically coupled to a conductive trace formed within the LTCC layers of the package.