The STP33N60M6 from STMicroelectronics is a MOSFET with Continous Drain Current 25 A, Drain Source Resistance 105 to 125 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage - 25 to 25 V, Gate Source Threshold Voltage 3.25 to 4.75 V. Tags: Through Hole. More details for STP33N60M6 can be seen below.