The RSJ400N06FRA from ROHM Semiconductor is a MOSFET with Continous Drain Current -40 to 40 A, Drain Source Resistance 11 to 16 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for RSJ400N06FRA can be seen below.