The DMN4031SSDQ from Diodes Incorporated is a MOSFET with Continous Drain Current 7 A, Drain Source Resistance 19 to 50 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.6 to 3 V. Tags: Surface Mount. More details for DMN4031SSDQ can be seen below.