Patent ID: 6409071
Filing Date: 2002-06-25
Classification: B23K

Abstract:
A method for welding two end portions of a coil onto two electric contact pads or bumps of an integrated circuit or an electronic unit of small dimensions comprising the steps of:supplying a coil comprising an electric wire at least partially coated with an insulating sheath, the coil having three main portions, the three main portions including a first end portion, a second end portion and a third portion, wherein the third portion is wound and defines a winding, and the first end portion and the second end portion are apart from the winding and define two end portions of the coil; supplying an integrated circuit, or an electronic unit of small dimensions, having two electric contact pads or bumps; arranging the two end portions respectively into position relative to the winding, wherein each respective position corresponds to a predetermined position appropriate for performing a welding step and at a certain distance from the electrical contact pads or bumps; at least partially removing the insulating sheath of the coil from the two end portions in a preliminary step while the two end portions are in the predetermined position, wherein the step of partially removing the insulating sheath is carried out at two locations respectively the two end portions, each location of the two locations being a determined location on the coil relative to the winding; and welding the two end portions onto the two electric contact pads or bumps.