The SiA441DJ from Vishay is a MOSFET with Continous Drain Current -12 A, Drain Source Resistance 39 to 65 Milliohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -2.2 to -1.2 V. Tags: Surface Mount. More details for SiA441DJ can be seen below.