Patent ID: 7595549

Claim:
A surface mount semiconductor device, comprising: a lead frame; a semiconductor chip located adjacent the lead frame; a package that is formed of a resin and has a concave portion and side faces, the concave portion including a transparent material therein that seals the semiconductor chip located at the concave portion, wherein the lead frame includes a lead extending laterally from one of the side faces of the package and includes a bending portion, the lead being bent at the bending portion of the lead such that the lead extends along the one of the side faces of the package, the lead having an extending direction that is substantially perpendicular to one of the side faces, a width direction that is substantially perpendicular to the extending direction and at least one of the side faces, and a thickness direction substantially perpendicular to both the extending direction and the width direction; and means for reducing a force required to bend the lead located at the bending portion of the lead, the means including a plurality of concave grooves formed at the bending portion of the lead on at least one surface of the lead, the concave grooves not penetrating through the lead in the thickness direction.