The BUK7Y13-40B from Nexperia is a MOSFET with Continous Drain Current 58 A, Drain Source Resistance 11 to 25 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 4.4 V. Tags: Surface Mount. More details for BUK7Y13-40B can be seen below.