The AUIRFN8459 from Infineon Technologies is a MOSFET with Continous Drain Current 50 to 70 A, Drain Source Resistance 4.8 to 5.9 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2.2 to 3.9 V. Tags: Surface Mount. More details for AUIRFN8459 can be seen below.