The STL26N65DM2 from STMicroelectronics is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 182 to 306 Milliohm, Drain Source Breakdown Voltage 650 V, Gate Source Voltage - 25 to 25 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Surface Mount. More details for STL26N65DM2 can be seen below.