Patent ID: 9691689
Date: 2017-06-27
CPC Classifications: H01L

Claim:
1. A lead frame comprising: a semiconductor-mounting part having an upper surface; a semiconductor element mounted in the upper surface; a terminal part an upper surface of which is used for wire bonding of the semiconductor element; a protrusion is formed on a lateral side of at least one of the semiconductor-mounting part and the terminal part, an upper side of the protrusion horizontally projects beyond an edge of a lower surface of the semiconductor-mounting part and the terminal part and the protrusion runs slantingly and downward from a lower side of the projecting upper side of the protrusion so that the protrusion horizontally projects beyond an edge of the upper surface of the semiconductor-mounting part or the terminal part and also projects downward from the upper side, the protrusion is formed to have a top end that is approximately flat or is formed to have a top end the cross section of which has an arc-like profile, the top end of the protrusion being thick and inclined, a lower surface of the protrusion having a hollow, and a highest position of the hollow is higher than a lowest position of the top end of the protrusion.