The Si6423ADQ from Vishay is a MOSFET with Continous Drain Current -12.5 A, Drain Source Resistance 8.2 to 22.7 Milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -1 to -0.4 V. Tags: Surface Mount. More details for Si6423ADQ can be seen below.