The TSM300NB06CR from Taiwan Semiconductor is a MOSFET with Continous Drain Current 27 A, Drain Source Resistance 25 to 30 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Surface Mount. More details for TSM300NB06CR can be seen below.