The YJSD04N06C from Yangjie Electronic Technology is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 55 to 90 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 0.9 to 2 V. Tags: Surface Mount. More details for YJSD04N06C can be seen below.