The ESN21307 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current -35 to -45 A, Drain Source Resistance 9.5 to 18 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -25 to 25 V, Gate Source Threshold Voltage -1.0 to -2.0 V. Tags: Surface Mount. More details for ESN21307 can be seen below.