Patent ID: 7209027

Claim:
A circuit comprising: a plurality of micro fuses, wherein a micro fuse comprises a current flow region having a configuration that induces a void in said current flow region, said configuration causing said void to propagate from an initiation point across said current flow region; and a bus coupled to said plurality of micro fuses, said bus comprising a plurality of first segments coupled to said micro fuses, said bus further comprising a second segment coupled to each of said first segments, said second segment separated from said micro fuses by a distance that prevents said second segment from acting as a heat sink for said micro fuses, said micro fuse comprising: a laminate comprising a first layer and a second layer, said first layer having a lower electrical resistance than said second layer, wherein said second layer comprises: a first region adapted to be coupled to a voltage source; a second region adapted to be coupled to a ground; and said current flow region disposed between said first and second regions, wherein said current flow region is uncurved between said first and second regions and wherein said current flow region defines a recess in the plane of said second layer, said recess extending from one side of said current flow region into said current flow region, wherein said recess extends more than approximately halfway across said current flow region.