The UPA1931TE from Renesas is a MOSFET with Continous Drain Current -4.5 to 4.5 A, Drain Source Resistance 44 to 100 milliohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage -20 to 20 V, Gate Charge 20 nC. Tags: Surface Mount. More details for UPA1931TE can be seen below.