The STP20NF06L from STMicroelectronics is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 60 to 85 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -18 to 18 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for STP20NF06L can be seen below.