The Si7923DN from Vishay is a MOSFET with Continous Drain Current 6.4 A, Drain Source Resistance 38 to 75 Milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -3 to -1 V. Tags: Surface Mount. More details for Si7923DN can be seen below.