Device e.g. identification circuit, for use in subscriber identity module card of telephone to identify subscriber in mobile telephony network, has triggering unit triggering protection measurement upon detection of electric current

摘要

The device (10) has passive elements (40) formed by antennas to generate electric current in presence of an electric field/magnetic field. A triggering unit triggers a protection measurement upon detection of current when an intensity of the current exceeds a preset threshold. The elements are placed in a metallization layer located under a protection layer of an active part of a component (14). The triggering unit includes a fuse placed in series with the elements and dimensioned for melting when the fuse is traversed by the electric current having intensity greater than the threshold.