The TSM6963SDCA from Taiwan Semiconductor is a MOSFET with Continous Drain Current -4 A, Drain Source Resistance 23 to 68 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1 to -0.5 V. Tags: Surface Mount. More details for TSM6963SDCA can be seen below.