The ESNJ04R075 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current 46 to 59 A, Drain Source Resistance 5.5 to 12 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.0 to 2.5 V. Tags: Surface Mount. More details for ESNJ04R075 can be seen below.