The MDD5N50FRH from Magnachip Semiconductor is a MOSFET with Continous Drain Current 2.6 to 4.2 A, Drain Source Resistance 1.25 to 1.55 ohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Surface Mount. More details for MDD5N50FRH can be seen below.