The TK25V60X from Toshiba is a MOSFET with Continous Drain Current 25 A, Drain Source Resistance 110 to 135 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: Surface Mount. More details for TK25V60X can be seen below.