The STL30N10F7 from STMicroelectronics is a MOSFET with Continous Drain Current 30 A, Drain Source Resistance 27 to 35 Milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for STL30N10F7 can be seen below.