The TK20V60W5 from Toshiba is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 156 to 190 milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Surface Mount. More details for TK20V60W5 can be seen below.