120 V, N-Ch, 1.8 mΩ max, Automotive MOSFET, TOLT (10x15), OptiMOS™ 5 The IAUTN12S5N018T is a 1.8 mΩ, topside-cooled 120 V MOSFET coming in the TOLT package with Infineon’s leading OptiMOS™ 5 technology. Next to others the device is designed for HV-LV DCDC converter.