The Si6954ADQ from Vishay is a MOSFET with Continous Drain Current 3.4 A, Drain Source Resistance 44 to 75 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 V. Tags: Surface Mount. More details for Si6954ADQ can be seen below.