The MDD5N40RH from Magnachip Semiconductor is a MOSFET with Continous Drain Current 2.15 to 3.4 A, Drain Source Resistance 1.2 to 1.6 ohm, Drain Source Breakdown Voltage 400 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3.0 to 5.0 V. Tags: Surface Mount. More details for MDD5N40RH can be seen below.