Patent ID: 8227332

Claim:
A method for fabricating electrical bonding pads on one face of a wafer, comprising: producing electrically conductive areas each having an elongated shape including an elongated central part having opposed first and second ends with enlarged end parts at each first and second end; depositing a layer of mask material over the electrically conductive areas; producing openings in the layer of mask material which extend above said electrically conductive areas, the openings including enlarged end portions having an edge coincident with a peripheral edge of the enlarged end parts of the electrically conductive area and a central portion having an edge which is offset beyond a peripheral edge of the elongated central part of the electrically conductive area; producing blocks made of a solder material in said openings; removing the layer of mask material; and heating so as to shape, on the electrically conductive areas, said blocks into substantially domed elongated electrical bonding pads each including enlarged end domed portions joined by an elongated central domed portion, wherein the enlarged end dome portions and the elongated central dome portion have substantially a same height.