80 V, N-Ch, 1.2 mΩ max, Automotive MOSFET, TOLT (10x15), OptiMOS™-5 The IAUS300N08S5N012T is a 1.2 mΩ, topside-cooled 80 V MOSFET coming in the TOLT package with Infineon’s leading OptiMOS™-5 technology. Next to others the device is designed for 48V applications and is primarily used in the 48 V inverter, the DC-DC converter as well as the 48V main battery switch.