The RS1G201AT from ROHM Semiconductor is a MOSFET with Continous Drain Current 20 to 78 A, Drain Source Resistance 4.2 to 6.5 milliohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage -2.5 to -1 V. Tags: Through Hole. More details for RS1G201AT can be seen below.