The TSM650P03CX from Taiwan Semiconductor is a MOSFET with Continous Drain Current -4.1 A, Drain Source Resistance 55 to 100 milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.9 to -0.4 V. Tags: Surface Mount. More details for TSM650P03CX can be seen below.