The TK8A50DA from Toshiba is a MOSFET with Continous Drain Current 7.5 A, Drain Source Resistance 760 to 1040 Milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.4 to 4.4 V. Tags: Through Hole. More details for TK8A50DA can be seen below.