A combination of layout improvements and inner layer dielectric (ILD) material improvements provides a bond pad stack that is robust for both gold (Au) and copper (Cu) wires in circuits with only one or two pad metal layers. The layout improvements involve removing all vias between the top metal layer and the metal layers below top metal in the area under the passivation opening (where probe tips and the bond wire are placed). This allows for a more homogenous material without via discontinuities, thereby reducing stress concentration points in the ILD. The ILD material improvement involves adding a layer of silicon nitride in addition to the silicon oxide layer. Traditionally, the ILD consists of either spun-on or high density plasma (HDP) oxides. The growth of the thin layer of silicon nitride over the oxide on the topmost ILD layer provides a composite of significantly increased toughness and prevents cracks or other damage from propagating into the underlying active circuits and routing.

 
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