The FDMA420NZ from onsemi is a MOSFET with Continous Drain Current 5.7 A, Drain Source Resistance 30 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 FDMA420NZ can be seen below.