The RM50N60LD from Rectron Semiconductor is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 14 to 20 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.4 to 2.5 V. Tags: Surface Mount. More details for RM50N60LD can be seen below.