The ESN4186 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current 28 to 36 A, Drain Source Resistance 16.0 to 29.0 milli-ohm, Drain Source Breakdown Voltage 45 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.0 to 1.8 V. Tags: Surface Mount. More details for ESN4186 can be seen below.