transceiver ICs Industry standard footprint ROHS -compatible Applications: 10/100 Base-T 1000 Base-T POE Hubs, switches and routers PCs and modems B78476A8067A3 is a surface mount ferrite toroid , case and potting. This is a single port auto-MDIX capable 10/100 Base-T magnetics module. Note: B78476A8067A3 could be called out as B78476A8067A003 because