The FCMT299N60 from onsemi is a MOSFET with Continous Drain Current 12 A, Drain Source Resistance 299 milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3.5 V. Tags: Surface Mount. More details for FCMT299N60 can be seen below.