The RM5N60S4 from Rectron Semiconductor is a MOSFET with Continous Drain Current 5 A, Drain Source Resistance 46 to 80 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.2 V. Tags: Surface Mount. More details for RM5N60S4 can be seen below.