The ES2318 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current 3.6 to 4.6 A, Drain Source Resistance 30 to 60 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.0 to 2.2 V. Tags: Surface Mount. More details for ES2318 can be seen below.