The STD6NF10 from STMicroelectronics is a MOSFET with Continous Drain Current 6 A, Drain Source Resistance 220 to 250 Milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for STD6NF10 can be seen below.