The ES3401 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current -3.5 to -4.2 A, Drain Source Resistance 46 to 78 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.5 to -1.1 V. Tags: Surface Mount. More details for ES3401 can be seen below.