The STD70N10F4 from STMicroelectronics is a MOSFET with Continous Drain Current 60 A, Drain Source Resistance 15 to 19.5 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 STD70N10F4 can be seen below.