The AG166FNH7FRATCB from ROHM Semiconductor is a MOSFET with Continous Drain Current ±40 A, Drain Source Resistance 9 to 18 milli-ohm, Drain Source Breakdown Voltage 80 V, Gate Source Voltage ±20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for AG166FNH7FRATCB can be seen below.