The SiA537EDJ from Vishay is a MOSFET with Continous Drain Current -4.5 A, Drain Source Resistance 23 to 165 Milliohm, Drain Source Breakdown Voltage -20 to 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -1 to 1 V. Tags: Surface Mount. More details for SiA537EDJ can be seen below.