The STL45N10F7AG from STMicroelectronics is a MOSFET with Continous Drain Current 18 A, Drain Source Resistance 20 to 24 Milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Surface Mount. More details for STL45N10F7AG can be seen below.