The RS6G120CHTB1 from ROHM Semiconductor is a MOSFET with Continous Drain Current -300 to 300 A, Drain Source Resistance 0.78 to 1.76 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.0 to 4.0 V. Tags: Surface Mount. More details for RS6G120CHTB1 can be seen below.