The ESNQ03R040 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current 74 to 95 A, Drain Source Resistance 2.9 to 6.5 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.0 to 2.5 V. Tags: Surface Mount. More details for ESNQ03R040 can be seen below.