The TK39Z60X from Toshiba is a MOSFET with Continous Drain Current 38.8 A, Drain Source Resistance 55 to 65 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 3.5 V. Tags: Through Hole. More details for TK39Z60X can be seen below.