The PSMN4R8-100BSE from Nexperia is a MOSFET with Continous Drain Current 120 A, Drain Source Resistance 4.1 to 13 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 4.6 V. Tags: Surface Mount. More details for PSMN4R8-100BSE can be seen below.