The TK290P60Y from Toshiba is a MOSFET with Continous Drain Current 11.5 A, Drain Source Resistance 230 to 290 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4 V. Tags: Surface Mount. More details for TK290P60Y can be seen below.