The NTLJS4D9N03HTAG from onsemi is a MOSFET with Continous Drain Current 15.9 A, Drain Source Resistance 4.7 to 6.1 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 1.2 to 2.1 V. Tags: Surface Mount. More details for NTLJS4D9N03HTAG can be seen below.