The KFJ9B0639ZL from Nuvoton Technology is a MOSFET with Continous Drain Current -5.2 to -8.9 A, Drain Source Resistance 14 to 43 milli-ohm, Drain Source Breakdown Voltage -60 V, Gate Source Voltage -20 to 10 V, Gate Source Threshold Voltage -1.0 to -3.0 V. Tags: Chip. More details for KFJ9B0639ZL can be seen below.