The YJB120G08A from Yangjie Electronic Technology is a MOSFET with Continous Drain Current 120 A, Drain Source Resistance 3.6 to 4.5 milliohm, Drain Source Breakdown Voltage 85 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for YJB120G08A can be seen below.