The TSM018NB03CR from Taiwan Semiconductor is a MOSFET with Continous Drain Current 194 A, Drain Source Resistance 1.4 to 2.8 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for TSM018NB03CR can be seen below.