The UPA1803GR from Renesas is a MOSFET with Continous Drain Current -8 to 8 A, Drain Source Resistance 8.6 to 16 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Charge 36 nC. Tags: Surface Mount. More details for UPA1803GR can be seen below.