SS Coils KEMET SS Coils are offered in a wide variety of sizes and specifications. These gear-type coils feature proprietary ferrite cores and are designed for use in noise countermeasure fields. KEMET SS coils have a rectangular core with middle or small size core dimensions and low to middle current (300mA to 5A). The optimized core shape and product structure are ideal for compact applications where space is a priority. These coils are available in vertical and horizontal assemblies. Typical applications include audio-visual equipment, office automation equipment, digital appliances, and power supply devices.