The IRF7309PbF from Infineon Technologies is a MOSFET with Continous Drain Current -3.5 to 4.7 A, Drain Source Resistance 50 to 160 milliohm, Drain Source Breakdown Voltage -30 to 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1 to 1 V. Tags: Surface Mount. More details for IRF7309PbF can be seen below.