The TSM3443CX6 from Taiwan Semiconductor is a MOSFET with Continous Drain Current -4.7 A, Drain Source Resistance 48 to 100 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1.4 to -0.5 V. Tags: Surface Mount. More details for TSM3443CX6 can be seen below.