The YJD30N02A from Yangjie Electronic Technology is a MOSFET with Continous Drain Current 30 A, Drain Source Resistance 5.6 to 9 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -10 to 10 V, Gate Source Threshold Voltage 0.45 to 1 V. Tags: Surface Mount. More details for YJD30N02A can be seen below.