The P4KE480CA-B is a 400W unidirectional plastic-encapsulated ESD Suppressor / TVS Diode with an axial lead configuration, manufactured by Littelfuse. This ESD Suppressor / TVS Diode is designed to protect high-speed data interfaces such as USB 2.0, RS-232, FireWire, Ethernet, and HDMI from electrostatic discharge (ESD) and other transient over-voltage events. The P4KE480CA-B has a low dynamic resistance of 0.006 Ohms maximum with a working voltage of +48 VDC, and a maximum clamping voltage of 72V (tvs@ 8/20µs). It features an operating temperature range of -55C to +125C, a storage temperature range of -55C to +150C, and a peak pulse power of 2000W.