The TSM5055DCR (Q2) from Taiwan Semiconductor is a MOSFET with Continous Drain Current 107 A, Drain Source Resistance 2.7 to 5.5 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for TSM5055DCR (Q2) can be seen below.