The TPWR6003PL from Toshiba is a MOSFET with Continous Drain Current 412 A, Drain Source Resistance 0.63 to 0.84 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.1 to 2.1 V. Tags: Surface Mount. More details for TPWR6003PL can be seen below.