The TSM033NB04CR from Taiwan Semiconductor is a MOSFET with Continous Drain Current 121 A, Drain Source Resistance 2.4 to 3.3 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for TSM033NB04CR can be seen below.