The RM80N30LD from Rectron Semiconductor is a MOSFET with Continous Drain Current 80 A, Drain Source Resistance 5.5 to 10 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for RM80N30LD can be seen below.