The KFJ9B0438ZL from Nuvoton Technology is a MOSFET with Continous Drain Current -5.2 to -9.4 A, Drain Source Resistance 14 to 38.0 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 KFJ9B0438ZL can be seen below.