Patent ID: 6858919

Claim:
A semiconductor package comprising: a plurality of horizontal metal leads, each lead having a first side, and an opposite second side having at least one horizontal first surface and at least one horizontal second surface recessed from the first surface; a chip mounting substrate having a first side and an opposite second side, said second side having a horizontal central surface and a horizontal peripheral surface fully around and recessed from the central surface; a semiconductor chip having an active surface facing the first side of the leads and the first side of the chip mounting substrate, and input-output pads at a peripheral portion of the active surface, wherein each of the peripheral input-output pads faces and is electrically connected to the first side of a respective one of the leads; and a package body formed of a hardened encapsulating material, wherein the encapsulating material covers the semiconductor chip, the recessed peripheral surface of the second side of the chip mounting substrate, and the at least one recessed second surface of the second side of the leads, while the central surface of the second side of the chip mounting substrate and the at least one first surface of the second side of the leads are exposed at a horizontal first exterior surface of the package body.