As a global leader in the field of the protection circuit, Littelfuse brand products including POWR-GARD, Teccor, Wickmann r r r r r, Pudenz, Hamlin, PulseGuard and SIDACtor, covering the broad technology such as PTC, GDT, fuse, varistors, TVS diode and TVS diode array (SPA), thyristor switch pipe and reed switch, relay and sensor. Littelfuse products are backed by industry-leading, over 85 years of technological innovation, technical support, design and manufacturing experience. Littelfuse products are critical for almost all electrical products, including automotive, computers, consumer electronics, handheld devices, industrial equipment, and communications / data communications circuits.