WE-RJ45 USB 3.0 LAN Transformers Würth Elektronik WE-RJ45 USB 3.0 LAN Transformers offer integrated surge protection that eliminates the need for additional parts for the surge protection. The WE-RJ45 transformers feature an RJ45 connector with an integrated transformer, USB 3.0 ports, and LEDs. The WE-RJ45 also features an extended temperature range of -40°C to +85°C and are 10/100/1000 Base-T compatible. Applications for the Würth Elektronik WE-RJ45 LAN Transformers include Ethernet, 1 Gigabit Ethernet, Embedded PCs, Hubs, Routers, Switches, and USB 3.0.