The NDS331N from onsemi is a MOSFET with Continous Drain Current 1.3 A, Drain Source Resistance 110 to 400 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.5 to 1 V. Tags: Surface Mount. More details for NDS331N can be seen below.