The SiA811ADJ from Vishay is a MOSFET with Continous Drain Current -4.5 A, Drain Source Resistance 96 to 205 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 SiA811ADJ can be seen below.