The STI270N4F3 from STMicroelectronics is a MOSFET with Continous Drain Current 120 A, Drain Source Resistance 2.1 to 2.6 Milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for STI270N4F3 can be seen below.