The YJQ40P03A from Yangjie Electronic Technology is a MOSFET with Continous Drain Current -40 A, Drain Source Resistance 8.6 to 25 milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -25 to 25 V, Gate Source Threshold Voltage -2.8 to -1.2 V. Tags: Surface Mount. More details for YJQ40P03A can be seen below.