The STL140N4LLF5 from STMicroelectronics is a MOSFET with Continous Drain Current 140 A, Drain Source Resistance 2.2 to 3.1 Milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -22 to 22 V, Gate Source Threshold Voltage 1 V. Tags: Surface Mount. More details for STL140N4LLF5 can be seen below.