The IQIA31N90A3 from iQXPRZ Power is a MOSFET with Continous Drain Current 20 to 31 A, Drain Source Resistance 0.10 to 0.27 ohm, Drain Source Breakdown Voltage 900 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 3.5 V. Tags: Surface Mount. More details for IQIA31N90A3 can be seen below.