Caddock MP800 Series Film Resistors 20 W. Caddock MP800 series power film resistors in the TO-220 style power package with metal mounting tab. These resistors have a resistance range of 0.020 to 10.0 K. The MP800 Series has a non-inductive design for high-speed switching, snubbers, and rf applications. Features ; Benefits:. Power film resistors in TO-220 enclosure. Non inductive. Can accommodate a heat sink. These types of components are very useful at high frequencies up to 500 MHz. Electrically insulated enclosure.