The TSM4N60ECP from Taiwan Semiconductor is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 2000 to 2500 milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Surface Mount. More details for TSM4N60ECP can be seen below.