The BT16B09P with RJ45 Transformer SMD, 16PIN RoHS manufactured by TNK is an electrical component used for transmitting electrical signals between two circuits or devices. It is a small-sized transformer with 16 pins and a surface-mount design, and is RoHS compliant. It is designed to fit standard RJ45 connectors and is capable of providing stable electric current to two circuits. It can be used to convert, isolate, and transform signals, and can be used in numerous applications such as for integrating telecommunications systems, temporary power systems, and distributed powering solutions. It also has multiple protection features, such as overvoltage, overcurrent, and short-circuit protection.