The UPA1857GR from Renesas is a MOSFET with Continous Drain Current -3.8 to 3.8 A, Drain Source Resistance 53 to 95 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Charge 12 nC. Tags: Surface Mount. More details for UPA1857GR can be seen below.