Soderon FS/155 fast solder heavy build round magnet wire is designed to be utilized where the particular coil or component design may utilize the unique solder stripping property. The film lends itself to the precise process control required in manufacturing many electrical/electronic devices. - Soderon FS/155 heavy build round magnet wire with its improved fast solder polyurethane film, over coated with nylon, surpasses standard Class 130 and 155 in its speed of solderability and can be used in a wide array of wire applications. Exhibits high dielectric strength.