The STN3NF06 from STMicroelectronics is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 70 to 100 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for STN3NF06 can be seen below.