The FK4B01110L from Nuvoton Technology is a MOSFET with Continous Drain Current 2.3 to 4.1 A, Drain Source Resistance 47 to 210 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 FK4B01110L can be seen below.