Patent ID: 7183652

Claim:
An electronic component comprising: a semiconductor chip; a substrate, the substrate including: a dielectric body including a first surface and a second surface, a plurality of first contact areas disposed on the first surface, a plurality of second contact areas disposed on the second surface, wherein each of the plurality of second contact areas includes one of copper and a copper alloy; a first insulating layer disposed on the second surface, wherein said first insulating layer includes a plurality of first apertures, each of the plurality of first apertures being located at a respective one of the second contact areas; and a plurality of bumps, each of the plurality of bumps being disposed on a respective one of the second contact areas, wherein each of the plurality of bumps comprises lead-free solder and each first aperture includes a diameter that is approximately 50% larger that a diameter of each of the plurality of lead free solder bumps before the solder is reflowed.