The RM50N60DF from Rectron Semiconductor is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 14 to 18 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for RM50N60DF can be seen below.