The TK4R1A10PL from Toshiba is a MOSFET with Continous Drain Current 85 A, Drain Source Resistance 3.5 to 5.9 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.5 to 2.5 V. Tags: Through Hole. More details for TK4R1A10PL can be seen below.