A detector for determining a faulty semiconductor component including a semiconductor component, a contact-via chain, which is situated laterally at a distance from the semiconductor component and which surrounds the semiconductor component in regions, a guard ring, which is situated laterally at a distance from the semiconductor component, and an evaluation unit, which is situated on the semiconductor component, wherein the evaluation unit is designed to apply an electrical voltage to the contact-via chain, in particular a permanent electrical voltage, to detect a resistance value of the contact-via chain and to produce an output signal when the resistance value of the contact-via chain exceeds a threshold value.