PHBC Coils KEMET PHBC Coils are normal mode chokes with a variety of characteristics. These coils feature Fe-Ni dust cores that offer low core loss, high saturation magnetic flux density, and DC superposition characteristics. KEMET PHBC Coils are useful in fields such as DC-DC converters and normal noise countermeasures. Other ideal applications include switching power supply outlets, phase compensation, and boost converters.