Equal cross-section is not equal thermal behaviorAt equal length and temperature these areas yield equal DC resistance. They are not interchangeable thermal, impedance or manufacturability designs.Equal cross-section is not equal thermal behaviorTwo mathematical geometries; not approved fabrication dimensions.A: 2 mm × 35 µmB: 1 mm × 70 µmBoth areas = 0.070 mm²Surface area, etch geometry and impedance differ.³Ô¹Ïtv engineering illustration · conceptual, not to scale · examples are not acceptance limits