The assembly comprises at least one microelectronic chip having two parallel main surfaces and lateral surfaces, at least one of the lateral faces comprising a longitudinal groove housing a wire element having an axis parallel to the longitudinal axis of the groove. The groove is delineated by at least two side walls. The wire element is secured to the chip at the level of a clamping area between at least one bump arranged on one of the side walls, and the side wall of the groove opposite said bump. The clamping area has a smaller height than the diameter of the wire element and a free area is arranged laterally to the bump along the longitudinal axis of the groove. The free area has a height, corresponding to the distance separating the two side walls, that is greater than the diameter of the wire element.
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