The BUK9Y1R3-40H from Nexperia is a MOSFET with Continous Drain Current 190 A, Drain Source Resistance 0.67 to 3.9 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -10 to 16 V, Gate Source Threshold Voltage 0.6 to 2.5 V. Tags: Surface Mount. More details for BUK9Y1R3-40H can be seen below.