The FDMC7678 from onsemi is a MOSFET with Continous Drain Current 17.5 to 63 A, Drain Source Resistance 4.2 to 7.2 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 1.2 to 3 V. Tags: Surface Mount. More details for FDMC7678 can be seen below.