The NTHS4166NT1G from onsemi is a MOSFET with Continous Drain Current 6.6 A, Drain Source Resistance 18 to 27 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.1 to 2.3 V. Tags: Surface Mount. More details for NTHS4166NT1G can be seen below.