Semicon Associates, a Ceradyne Company, was founded in Lexington, Kentucky in 1953, and has 35,000 sq. ft. (3,252 m²) of manufacturing space.

Semicon Associates is a world-class producer of dispenser cathodes for traveling wave tubes, dispenser cathodes for cathode ray tubes, dispenser cathodes for ion lasers, space qualified cathode assemblies, and samarium cobalt magnets. These components are used in the communications, space, medical research, and defense industries.

Semicon Associates is an ISO 9001-2000 company.