The FDD390N15ALZ from onsemi is a MOSFET with Continous Drain Current 26 A, Drain Source Resistance 42 milliohm, Drain Source Breakdown Voltage 150 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.8 V. Tags: Surface Mount. More details for FDD390N15ALZ can be seen below.