The RM12N500T2 from Rectron Semiconductor is a MOSFET with Continous Drain Current 12 A, Drain Source Resistance 400 to 520 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4 V. Tags: Through Hole. More details for RM12N500T2 can be seen below.