The DMT12H090LFDF4 from Diodes Incorporated is a MOSFET with Continous Drain Current 3.4 A, Drain Source Resistance 90 to 350 Milliohm, Drain Source Breakdown Voltage 115 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.6 to 2.2 V. Tags: Surface Mount. More details for DMT12H090LFDF4 can be seen below.