The TK17A65W5 from Toshiba is a MOSFET with Continous Drain Current 17.3 A, Drain Source Resistance 190 to 230 Milliohm, Drain Source Breakdown Voltage 650 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Through Hole. More details for TK17A65W5 can be seen below.