The FDMS86540 from onsemi is a MOSFET with Continous Drain Current 129 A, Drain Source Resistance 3.4 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 4 V. Tags: Surface Mount. More details for FDMS86540 can be seen below.