The TK3R1P04PL from Toshiba is a MOSFET with Continous Drain Current 58 A, Drain Source Resistance 2.5 to 4.3 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.4 to 2.4 V. Tags: Surface Mount. More details for TK3R1P04PL can be seen below.