The KFJ4B01100L from Nuvoton Technology is a MOSFET with Continous Drain Current -2.2 to -4.1 A, Drain Source Resistance 57 to 290 milli-ohm, Drain Source Breakdown Voltage -12 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -0.3 to -1.0 V. Tags: Chip. More details for KFJ4B01100L can be seen below.