The TSM2312CX from Taiwan Semiconductor is a MOSFET with Continous Drain Current 4.9 A, Drain Source Resistance 27 to 51 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.45 to 1 V. Tags: Surface Mount. More details for TSM2312CX can be seen below.