The STB26NM60N from STMicroelectronics is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 135 to 165 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for STB26NM60N can be seen below.