The STD30NF06LT4 from STMicroelectronics is a MOSFET with Continous Drain Current 35 A, Drain Source Resistance 22 to 30 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for STD30NF06LT4 can be seen below.