Integrated type MIS substrate for thin double side SIP package

A molded interconnection substrate system in package is achieved comprising a molding compound having redistribution layers therein, at least one first active or passive component mounted on one side of the molded interconnection substrate and embedded in a top molding compound, at least one second active or passive component mounted in a cavity on an opposite side of the molded interconnection substrate wherein electrical connections are made between the at least one first active or passive component and the at least one second active or passive component through the redistribution layers and solder balls mounted in openings in the molded interconnection substrate to the redistribution layers wherein the solder balls provide package output.