The BUK9Y6R5-40H from Nexperia is a MOSFET with Continous Drain Current 50 to 70 A, Drain Source Resistance 3.9 to 16.7 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 0.7 to 2.6 V. Tags: Surface Mount. More details for BUK9Y6R5-40H can be seen below.