The STD18NF03L from STMicroelectronics is a MOSFET with Continous Drain Current 22 A, Drain Source Resistance 38 to 60 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage 16 V, Gate Source Threshold Voltage 1 to 2.2 V. Tags: Through Hole. More details for STD18NF03L can be seen below.