The AUIRFS8408-7P from Infineon Technologies is a MOSFET with Continous Drain Current 240 to 397 A, Drain Source Resistance 0.7 to 1 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 AUIRFS8408-7P can be seen below.