The RMP20N500TI from Rectron Semiconductor is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 230 to 280 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Through Hole. More details for RMP20N500TI can be seen below.