The Si7848BDP from Vishay is a MOSFET with Continous Drain Current 47 A, Drain Source Resistance 7.4 to 12 Milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for Si7848BDP can be seen below.