Patent ID: 8378479

Claim:
A semiconductor device, comprising: a semiconductor chip including a first electrode of a semiconductor element and a second electrode of the semiconductor element, the first electrode being configured on a first surface of the semiconductor chip, the second electrode being configured on a second surface of the semiconductor chip, the second surface being opposite to the first surface of the semiconductor chip; an encapsulating material encapsulating a surface portion of the semiconductor chip, the surface portion being other than the second surface and a region connecting with the first electrode in the first surface; an inner electrode being connected with the first electrode, a thickness of the inner electrode from the first surface being the same as that of the encapsulating material from the first surface; a first outer electrode being formed on the encapsulating material, the first outer electrode being connected with the inner electrode, a width of the first outer electrode in a lateral direction parallel to the first surface being at least wider than a width of the semiconductor chip in the lateral direction; and a second outer electrode being formed on the encapsulating material, the second outer electrode being connected with the second surface, a width of the second outer electrode at least wider than the width of the semiconductor chip; a first outer plating material covering five surfaces of the first outer electrode other than one surface of the first outer electrode being connected with the inner electrode; and a second outer plating material covering five surfaces of the second outer electrode other than one surface of the second outer electrode being connected with the second outer electrode.