The SiA527DJ from Vishay is a MOSFET with Continous Drain Current 4.5 A, Drain Source Resistance 24 to 174 Milliohm, Drain Source Breakdown Voltage -12 to 12 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -1 to 1 V. Tags: Surface Mount. More details for SiA527DJ can be seen below.