The STD40NF03LT4 is a STripFET™ II N-channel Power MOSFET developed using third generation of STMicroelectronics unique Single Feature Size™ strip-based process. The device has the best trade-off between ON-resistance and gate charge. When used as high and low side in buck regulators, it gives the best performance in terms of both conduction and switching losses. It is extremely important for motherboards where fast switching and high efficiency are of paramount importance.