The TSM15N50CI from Taiwan Semiconductor is a MOSFET with Continous Drain Current 14 A, Drain Source Resistance 350 to 440 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 TSM15N50CI can be seen below.