The TSM4424CS from Taiwan Semiconductor is a MOSFET with Continous Drain Current 8 A, Drain Source Resistance 23 to 45 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.65 to 1 V. Tags: Surface Mount. More details for TSM4424CS can be seen below.