The ESD138KZ from Hunan Jingxin Microelectronics is a MOSFET with Continous Drain Current -4.5 to -5.8 A, Drain Source Resistance 40 to 80 milli-ohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.0 to -2.0 V. Tags: Surface Mount. More details for ESD138KZ can be seen below.