The TSM033NB04LCR from Taiwan Semiconductor is a MOSFET with Continous Drain Current 121 A, Drain Source Resistance 2.3 to 4 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for TSM033NB04LCR can be seen below.