Bimetallic fuse element between metal levels

A fuse element comprising:

• a first bimetallic pillar disposed between and electrically connecting a first metal level to a second metal level, wherein the first bimetallic pillar comprises a first metal strip adjacent to a second metal strip, and wherein a first width of the second metal strip is substantially equal to a width of the first bimetallic pillar;
• and
• an interlayer dielectric disposed between the first metal level and the second metal level, wherein opposing sidewalls of the first metal strip and the second metal strip directly contact the interlayer dielectric.

A fuse element comprising:

• a first bimetallic pillar disposed between and electrically connecting a first metal level to a second metal level, wherein the first bimetallic pillar comprises a first metal strip adjacent to a second metal strip, wherein the second metal strip is physically disposed between a bottom surface of the first metal strip and the first metal level;
• and
• an interlayer dielectric disposed between the first metal level and the second metal level, wherein opposing sidewalls of the first metal strip and the second metal strip directly contact the interlayer dielectric.