The PSMN0R9-30ULD from Nexperia is a MOSFET with Continous Drain Current 284 to 300 A, Drain Source Resistance 0.65 to 1.8 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.2 V. Tags: Surface Mount. More details for PSMN0R9-30ULD can be seen below.