100 V, N-Ch, 3.1 mΩ max, Automotive MOSFET, sTOLL (7x8), OptiMOS™ 5 The IAUA170N10S5N031 is a 3.1mR 100V MOSFET in an sTOLL high power leadless 7x8 mm2 package, using Infineon's leading OptiMOS™ 5 technology. Next to others it is used in 48V Auxiliaries like HVAC Compressors, Pumps, Fans and Safety Switches.