The Si2318CDS from Vishay is a MOSFET with Continous Drain Current 5.6 A, Drain Source Resistance 35 to 51 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for Si2318CDS can be seen below.