The PSMN4R2-80YSE from Nexperia is a MOSFET with Continous Drain Current 170 A, Drain Source Resistance 3.2 to 6.4 milliohm, Drain Source Breakdown Voltage 80 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.6 to 3.6 V. Tags: Surface Mount. More details for PSMN4R2-80YSE can be seen below.