The STD8NF25 from STMicroelectronics is a MOSFET with Continous Drain Current 8 A, Drain Source Resistance 318 to 420 Milliohm, Drain Source Breakdown Voltage 250 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for STD8NF25 can be seen below.