The KFJ9B0458ZL from Nuvoton Technology is a MOSFET with Continous Drain Current -8.1 to -13.8 A, Drain Source Resistance 6.0 to 20.0 milli-ohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage -20 to 10 V, Gate Source Threshold Voltage -1.0 to -3.0 V. Tags: Chip. More details for KFJ9B0458ZL can be seen below.