OptiMOS™ power MOSFET 120 V in TOLT package Infineon’s OptiMOS™ power MOSFET 120 V technology meets TO-Leaded top-side cooling package for superior thermal performance. This innovative package combined with the key features of OptiMOS™ technology allows for high power density designs.The TOLT package in addition to its high-current low-profile features, compared typically to the TOLL family, offers the advantage of top-side cooling making it an ideal choice for applications seeking high thermal performance.