The DMG3402LQ from Diodes Incorporated is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 85 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.6 to 1.4 V. Tags: Surface Mount. More details for DMG3402LQ can be seen below.