One embodiment discloses a method for soldering a cap for an integrated electronic device to a support layer, including the steps of: providing a support layer; providing a cap including a core of a first material and a coating layer of a second material, the first and second material being respectively wettable and non-wettable with respect to a solder, the coating layer being arranged so as to expose a surface of the core; coupling the cap with the support layer; and soldering the surface of the core to the support layer, by means of the solder.