The IRF9Z30 from Vishay is a MOSFET with Continous Drain Current -18 A, Drain Source Resistance 140 milliohm, Drain Source Breakdown Voltage -50 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -2 to -4 V. Tags: Through Hole. More details for IRF9Z30 can be seen below.