Patent ID: 7282785
Filing Date: 2007-10-16
Classification: H01L

Abstract:
1. A surface mount type semiconductor device comprising: a pair of lead frames having a first end and a second end that are spaced from each other and that are butted opposite to each other, the first end having a chip mount portion and the second end having a connection portion; a chip that is mounted on the chip mount portion and wire-bonded to the connection portion; and a housing that is molded to the lead frames, wherein the lead frames are shaped such that they extend along a bottom surface of the housing and form surface mounting terminal portions, the lead frames are thinner at least at regions that are bent, and are relatively thicker at other regions, and at least one of the thinner regions of the lead frames is bent such that it extends in a first direction that is substantially perpendicular with respect to at least one of the chip mount portion and the connection portion, and the first end of the lead frames has a first end rear surface located opposite a top surface of the chip mount portion, and the second end of the lead frames has a second end rear surface located opposite a top surface of the connection portion, and at least one of the first end rear surface and second end rear surface includes a thinner portion that is thinner than the thicker other regions of the lead frames, and the at least one of the first end rear surface and second end rear surface includes a first surface portion and a second surface portion, the first surface portion being located at a different location with respect to the first direction than the respective second surface portion.