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 coaxial contacts, interchangeable in the same Multimate contact cavity.