The STL220N6F7 from STMicroelectronics is a MOSFET with Continous Drain Current 120 A, Drain Source Resistance 1.2 to 2.4 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 STL220N6F7 can be seen below.