The PSMN1R0-40ULD from Nexperia is a MOSFET with Continous Drain Current 198 to 280 A, Drain Source Resistance 0.93 to 2.45 Milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.05 to 2.2 V. Tags: Surface Mount. More details for PSMN1R0-40ULD can be seen below.