This document provides specifications and performance characteristics for the FQD13N10L/FQU13N10L N-Channel QFET MOSFET from Fairchild Semiconductor. The MOSFET has a maximum drain-source voltage of 100V, can provide continuous drain current up to 10A, and has an on-resistance as low as 180mOhm. Graphs of electrical characteristics like capacitance, gate charge, and safe operating area are included, showing performance over temperature and operating conditions. Testing methods are also described for key parameters. The device is suitable for applications like power supplies, motor control, and switching regulators.