The NTH4L028N170M1 from onsemi is a MOSFET with Continous Drain Current 57 A, Drain Source Resistance 40 milliohm, Drain Source Breakdown Voltage 1700 V, Gate Source Voltage -15 to 25 V, Gate Source Threshold Voltage 4.3 V. Tags: Through Hole. More details for NTH4L028N170M1 can be seen below.