The SiA471DJ from Vishay is a MOSFET with Continous Drain Current -30.3 A, Drain Source Resistance 11.5 to 24.1 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 SiA471DJ can be seen below.