The TPH1R403NL1 from Toshiba is a MOSFET with Continous Drain Current 230 A, Drain Source Resistance 1.2 to 2.1 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.3 to 2.3 V. Tags: Surface Mount. More details for TPH1R403NL1 can be seen below.