The PSMN4R5-40BS from Nexperia is a MOSFET with Continous Drain Current 96 to 100 A, Drain Source Resistance 3.79 to 8.7 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 4.6 V. Tags: Surface Mount. More details for PSMN4R5-40BS can be seen below.