The FDV303N from onsemi is a MOSFET with Continous Drain Current 0.68 A, Drain Source Resistance 330 to 800 milliohm, Drain Source Breakdown Voltage 25 V, Gate Source Voltage 8 V, Gate Source Threshold Voltage 0.65 to 1 V. Tags: Surface Mount. More details for FDV303N can be seen below.