The STP17NF25 from STMicroelectronics is a MOSFET with Continous Drain Current 17 A, Drain Source Resistance 140 to 165 Milliohm, Drain Source Breakdown Voltage 250 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for STP17NF25 can be seen below.