The BUK7K5R1-30E from Nexperia is a MOSFET with Continous Drain Current 40 to 40 A, Drain Source Resistance 4.34 to 9.4 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.4 to 4.5 V. Tags: Surface Mount. More details for BUK7K5R1-30E can be seen below.