The KFCAB21860L from Nuvoton Technology is a MOSFET with Continous Drain Current 17 to 40.5 A, Drain Source Resistance 1.00 to 4.50 milli-ohm, Drain Source Breakdown Voltage 12 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.35 to 1.40 V. Tags: Chip. More details for KFCAB21860L can be seen below.