The SMA5918BT3G is an E-MOSFET power transistor from ON Semiconductor's 30V N-Channel PowerTrench product. It is designed to deliver high levels of rDS(on) and low gate charge performance, making it suitable for low-loss and low-noise applications. It has a maximum drain current of 5.9A and a maximum drain-source voltage of 30V. This device also features fast switching speeds, low gate-source threshold, and stable linear operation. It is housed in a SOT23 package.