The RS6G120BG from ROHM Semiconductor is a MOSFET with Continous Drain Current -210 to 210 A, Drain Source Resistance 1.03 to 2.43 Milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for RS6G120BG can be seen below.