The ES3407A from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current -3.5 to -4.5 A, Drain Source Resistance 39 to 78 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -0.9 to -2.0 V. Tags: Surface Mount. More details for ES3407A can be seen below.