The BUK7Y18-75B from Nexperia is a MOSFET with Continous Drain Current 34.9 to 49 A, Drain Source Resistance 13.8 to 43.2 milliohm, Drain Source Breakdown Voltage 75 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 4.4 V. Tags: Surface Mount. More details for BUK7Y18-75B can be seen below.