Normal / Differential Mode Coils KEMET Normal / Differential Mode Coils feature various characteristics, sizes, and specifications. These coils offer four types of dust core material: Fe, Fe-Si, Fe-Ni, or Fe-Si-Al, depending on the model. KEMET Normal / Differential Mode Coils deliver a rated current of up to 8A for SN coils and up to 30A for XXBC coils. Typical applications include home appliances, power supplies, switching power supply outlets, DC-DC converters, phase compensation, boost converters, and standard mode noise countermeasures.