Assembling method through welding of a coil with an integrated circuit or a small electronic unit

摘要

A method for welding the two end parts (6, 8) of a coil (10) on two electrical contact studs or tracks (24, 26) of an integr circuit or small electronic unit is characterized in that, prior to the welding operation, a preliminary stage is provided which consists of eliminating at least partially the insulating sleeve (42) of the electric wire (10) forming the coil at least to the spots of the two end parts (6, 8) provided for the welding onto the electrical contact studs or tracks (24, 26). The insulating sleeve is locally eliminated by means of an injection of heat, notably with a heating press (58) working at a temperature sufficiently high to melt or sublimate the insulating sleeve. The welding stage is realized at a temperature clearly lower than temperature used in this preliminary stage to allow a diminution of the thermal and mechanical stresses in the integrated circui and the electrical contact studs or tracks (24, 26) during the welding of the coil ends (6, 8) on these studs or tracks.