The RJK0349DSP from Renesas is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 2.9 to 5 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Charge 25 nC. Tags: Surface Mount. More details for RJK0349DSP can be seen below.