The YJB200G06B from Yangjie Electronic Technology is a MOSFET with Continous Drain Current 200 A, Drain Source Resistance 2.3 to 2.9 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for YJB200G06B can be seen below.