The PSM20N50CT from PFC Device is a MOSFET with Continous Drain Current 13 to 20 A, Drain Source Resistance 0.145 to 0.190 ohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.8 to 3.9 V. Tags: Through Hole. More details for PSM20N50CT can be seen below.