The RMP12N65LD from Rectron Semiconductor is a MOSFET with Continous Drain Current 12 A, Drain Source Resistance 650 to 850 milliohm, Drain Source Breakdown Voltage 650 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for RMP12N65LD can be seen below.