The FCPF600N65S3R0L-F154 from onsemi is a MOSFET with Continous Drain Current 3.8 to 6 A, Drain Source Resistance 474 to 600 milliohm, Drain Source Breakdown Voltage 650 to 700 V, Gate Source Voltage 30 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Through Hole. More details for FCPF600N65S3R0L-F154 can be seen below.