Patent ID: 6650012
Filing Date: 2003-11-18
Classification: H01L,H05K,Y02P

Abstract:
A semiconductor device comprising:a semiconductor chip including a first surface having a plurality of pad electrodes, and a second surface; a plurality of lead electrodes, each lead electrode corresponding to one of said plurality of pad electrodes, extending radially relative to said semiconductor chip; connecting means connecting said respective lead electrodes to corresponding pad electrodes; and a resin encapsulating said semiconductor chip, said lead electrodes, and said connecting means, wherein each of said plurality of lead electrodes includes an internal lead portion having a first thickness and connected to said connecting means on an upper surface side of said lead electrode, and an external electrode portion having a second thickness, larger than the first thickness, and protruding toward an under surface side of said lead electrodes as an external connection part, said resin has an underside substantially co-planar with the under surface side of said internal lead portions of said lead electrodes, and a protruding peripheral portion protruding outwardly from a lateral side of said resin and contiguous with the underside of said resin, and said external electrode portion protrudes outwardly from the underside of said resin.