The BUK9K5R6-30E from Nexperia is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 3.9 to 11 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -15 to 15 V, Gate Source Threshold Voltage 0.5 to 2.45 V. Tags: Surface Mount. More details for BUK9K5R6-30E can be seen below.