The FDMC8588 from onsemi is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 5 milliohm, Drain Source Breakdown Voltage 25 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 1.8 V. Tags: Surface Mount. More details for FDMC8588 can be seen below.