The TK30A06N1 from Toshiba is a MOSFET with Continous Drain Current 43 A, Drain Source Resistance 12.2 to 15 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for TK30A06N1 can be seen below.