The RM50N150DF from Rectron Semiconductor is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 14 to 19 milliohm, Drain Source Breakdown Voltage 150 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Surface Mount. More details for RM50N150DF can be seen below.