CHIP SCALE SURFACE MOUNTED DEVICE AND PROCESS OF MANUFACTURE

摘要

A chip scale package has a MOSFET die (30) which has a top electrode surface (37) covered with a layer of a photosensitive liquid epoxy (111) photolithographically patterned to expose portions of the electrode (37), and to act as a passivation layer or solder mask. A solderable contact layer (40) is formed over the remaining portions of the layer of liquid epoxy (111). Each individual die (30) is mounted drain side down in a metal clip (100) or is mounted drain side down in a can with a drain electrode (34) disposed coplanar with a flange (105) extending from the can bottom (101).