The STL90N3LLH6 from STMicroelectronics is a MOSFET with Continous Drain Current 15 to 90 A, Drain Source Resistance 0.0038 to 0.0073 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for STL90N3LLH6 can be seen below.