The DMN4030LK3Q from Diodes Incorporated is a MOSFET with Continous Drain Current 9.6 A, Drain Source Resistance 21 to 50 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for DMN4030LK3Q can be seen below.