The FDC640P from onsemi is a MOSFET with Continous Drain Current -4.5 A, Drain Source Resistance 0.039 to 0.080 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1.5 V. Tags: Surface Mount. More details for FDC640P can be seen below.