Image is Representational - See Manufacturer Specs | Circular Connector - CPC Series 1 - Panel Mount Receptacle - 16 Contacts - Thermoplastic Body. The 1-207303-3 is a 16-position Receptacle Assembly with pin type contacts and UL94V-0 rated black thermoplastic housing. The standard sex circular plastic connector has keyed mating alignment threaded coupling mating retention and flange with mounting holes panel mount retention. The series 1 connector permit the use of multiple combinations of signal and coaxial circuits in the same housing by accepting durable Multimate contacts. This socket contacts include type III+ and subminiature coaxia