The STL26N60DM6 from STMicroelectronics is a MOSFET with Continous Drain Current 15 A, Drain Source Resistance 175 to 215 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: Surface Mount. More details for STL26N60DM6 can be seen below.