The BUK7M12-40E from Nexperia is a MOSFET with Continous Drain Current 34 to 48 A, Drain Source Resistance 9.8 to 23.6 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 4.5 V. Tags: Surface Mount. More details for BUK7M12-40E can be seen below.