The TPWR8004PL from Toshiba is a MOSFET with Continous Drain Current 340 A, Drain Source Resistance 0.65 to 1.35 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.1 to 2.4 V. Tags: Surface Mount. More details for TPWR8004PL can be seen below.