The IRFB13N50A from Vishay is a MOSFET with Continous Drain Current 14 A, Drain Source Resistance 450 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for IRFB13N50A can be seen below.