The US5U2 from ROHM Semiconductor is a MOSFET with Continous Drain Current -1.4 to 1.4 A, Drain Source Resistance 170 to 380 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for US5U2 can be seen below.