The IRF820AS from Vishay is a MOSFET with Continous Drain Current 2.5 A, Drain Source Resistance 3000 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4.5 V. Tags: Through Hole, Surface Mount. More details for IRF820AS can be seen below.