The TSM9N90ECZ from Taiwan Semiconductor is a MOSFET with Continous Drain Current 9 A, Drain Source Resistance 1130 to 1400 milliohm, Drain Source Breakdown Voltage 900 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for TSM9N90ECZ can be seen below.