The Si7634BDP from Vishay is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 4.5 to 7 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.4 to 2.6 V. Tags: Surface Mount. More details for Si7634BDP can be seen below.