The RJK0454DPB from Renesas is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 3.9 to 4.9 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Charge 25 nC. Tags: Surface Mount. More details for RJK0454DPB can be seen below.