The ES4946D from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current 3.3 to 5.0 A, Drain Source Resistance 30 to 50 milli-ohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.0 to 2.5 V. Tags: Surface Mount. More details for ES4946D can be seen below.