The STN4NF06L from STMicroelectronics is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 70 to 120 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -16 to 16 V, Gate Source Threshold Voltage 1 to 2.8 V. Tags: Surface Mount. More details for STN4NF06L can be seen below.