| 摘要 |
A resin overmolded semiconductor device includes an insulative substrate having a plurality of first through-holes, interconnection patterns provided on a chip-side surface of the insulative substrate, external connection terminals provided on the opposite surface of the insulative substrate, a semiconductor chip mounted on the chip-side surface, and a sealing portion. The insulative substrate is further formed with a plurality of second through-holes each having one end which is open on the opposite surface, and has second lands which cover the other ends of the second through-holes on the chip-side surface.
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