The PSMN4R5-80YSF from Nexperia is a MOSFET with Continous Drain Current 100 A, Drain Source Resistance 3.5 to 10 milliohm, Drain Source Breakdown Voltage 80 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for PSMN4R5-80YSF can be seen below.