Patent ID: 8610266

Claim:
A semiconductor device for radio frequency applications, comprising: a semiconductor chip comprising a radio frequency integrated circuit, the semiconductor chip having a plurality of contact pads and being accommodated in a radio frequency packaging, inside bumps configured as inside contacts between the semiconductor chip and a redistribution substrate, the redistribution substrate having a plurality of pads, outside bumps configured as outside contacts of said semiconductor device mounted on said redistribution substrate, an underfill material containing ceramic particles and filling a gap between the semiconductor chip and the redistribution substrate, wherein said inside bumps each has a plastic core, and a coating layer of a noble metal covering only an entire surface of each of the plastic cores that extends between the semiconductor chip and the redistribution substrate and that does not contact any of the contact pads of the semiconductor chip, wherein each of the plastic cores physically contacts both one of the contact pads of the semiconductor chip and one of the pads of the redistribution substrate.