The TK6A53D from Toshiba is a MOSFET with Continous Drain Current 6 A, Drain Source Resistance 1100 to 1300 Milliohm, Drain Source Breakdown Voltage 525 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.4 to 4.4 V. Tags: Through Hole. More details for TK6A53D can be seen below.