The FCD900N60Z from onsemi is a MOSFET with Continous Drain Current 4.5 A, Drain Source Resistance 900 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 FCD900N60Z can be seen below.