Patent ID: 9263374
Filing Date: 2016-02-16
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a lead frame including a die pad and a plurality of leads each disposed around the die pad; a semiconductor element rested on the die pad of the lead frame; electroconductive portions for electrically interconnecting the lead of the lead frame and the semiconductor element; and a sealing resin section for sealing the lead frame, the semiconductor element, and electroconductive portions; wherein the sealing resin section includes a central region provided over and around the semiconductor device, and a marginal region provided in the periphery of the central region; and thickness of the central region is greater than that of the marginal region, wherein: each of the leads includes an external terminal exposed to the exterior, the external terminal is configured to be connected to an outside member of the semiconductor device; the external terminals of the leads are disposed on at least two round lines including an inner round line and an outer round line, the external terminals are arranged in a staggered layout; and the external terminals arranged on the inner round line have a smaller size than the external terminals arranged on the outer round line.