The TSM4NB60CP from Taiwan Semiconductor is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 2200 to 2500 milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Surface Mount. More details for TSM4NB60CP can be seen below.