The Si7938DP from Vishay is a MOSFET with Continous Drain Current 60 A, Drain Source Resistance 4.8 to 7 Milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for Si7938DP can be seen below.