The Si7738DP from Vishay is a MOSFET with Continous Drain Current 30 A, Drain Source Resistance 31 to 38 Milliohm, Drain Source Breakdown Voltage 150 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for Si7738DP can be seen below.