Epcos b82144a series axial rf lbc chokes epcos b82144a2474j a 470microh large bobbin core lbc choke designed for use in hf applications the component is constructed using a large ferrite drum core wound with enamelled copper wire with the assembly protected by flame retardant lacquer coating the choke features a high rated current and is suitable for use in applications such as rf blocking and filtering decoupling and interference suppression as 12 or 16khz blocking filters in telecom