Patent ID: 6121679
Filing Date: 2000-09-19
Classification: H01L,H05K,Y02P

Abstract:
A substrate structure for surface mount devices, comprising:a plurality of substrate layers including at least a base layer and an outer layer;said base layer having a contact surface and a first array of conductive pads on said contact surface;said outer layer having a contact surface, a cutout and a second array of conductive pads on said contact surface; andsaid outer layer being mounted to said base layer with said cutout positioned over said first array of conductive pads, wherein said first array and said second array of conductive pads define in combination a device mounting site wherein said second array of conductive pads is disposed in an array positioned along at least a portion of said contact surface, and wherein said array is equal to 3 pads in width whereby traces for each pad of said second array can be positioned on said contact surface of said outer layer.