The ESPM3401 from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current -4.2 A, Drain Source Resistance 50 to 90 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.7 to -1.3 V. Tags: Surface Mount. More details for ESPM3401 can be seen below.