The TPN8R408QM from Toshiba is a MOSFET with Continous Drain Current 77 A, Drain Source Resistance 6.5 to 12.4 milliohm, Drain Source Breakdown Voltage 80 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.5 to 3.5 V. Tags: Surface Mount. More details for TPN8R408QM can be seen below.