The FDD4N60NZ from onsemi is a MOSFET with Continous Drain Current 3.4 A, Drain Source Resistance 2500 milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -25 to 25 V, Gate Source Threshold Voltage 5 V. Tags: Surface Mount. More details for FDD4N60NZ can be seen below.