OptiMOS™ 5 power MOSFET in TOLT for excellent thermal performance IPTC019N10NM5 is part of OptiMOS™ 5 power MOSFET in TOLT: the TO-Leaded top side-cooling package for superior thermal performance. This innovative package combined with the key features of OptiMOS™ 5 technology allows best-in-class products in 100 V as well as high current rating > 300 A for high power density designs.