The 3JS 1-R with Cartridge Fuses, manufactured by Bel Fuse, is a subminiature, surface-mount fuse specially designed to protect against catastrophic over-current events in small electronic devices. It is made from a heat-resistant polymeric material, and the fuse is housed in a steel case for further protection. Its small size makes it an efficient use of space on the device's PCB, and the chip enables reliable over-current protection without current-limiting devices. This fuse is suitable for use in a wide range of electronic products, including mobile and industrial communication devices, consumer electronics, automotive electronics, and medical equipment. The 3JS 1-R offers low surge response time and high current-carrying capacity, and is UL and TUV-certified.