The RJK1028DNS from Renesas is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 125 to 180 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -5 to 12 V, Gate Charge 3.7 nC. Tags: Surface Mount. More details for RJK1028DNS can be seen below.