The QS5U16 from ROHM Semiconductor is a MOSFET with Continous Drain Current -2 to 2 A, Drain Source Resistance 71 to 154 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage 12 V, Gate Source Threshold Voltage 0.5 to 1.5 V. Tags: Surface Mount. More details for QS5U16 can be seen below.