The ES4842 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current 5.8 to 7.7 A, Drain Source Resistance 16 to 37 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.0 to 2.2 V. Tags: Surface Mount. More details for ES4842 can be seen below.