{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"031-70543-12G","brand":"Amphenol","brandSlug":"amphenol","productSlug":"031-70543-12G","canonicalUrl":"https://icsourcedirect.com/amphenol/031-70543-12G","factsUrl":"https://icsourcedirect.com/api/mcp/products/031-70543-12G","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF BNC jack, female socket, 75 Ohm, 12 GHz, crimp termination, Belden 4505R, nickel body, gold center contact, 500 mating cycles, bayonet lock, bulk.","salesMarkdown":"The 031-70543-12G: It is the female end of a 75 Ohm BNC interconnect — used where the system impedance is 75 Ohm rather than the more common 50 Ohm, typically in video distribution, CCTV, broadcast, and broadband data networks. The jack accepts the cable shield via a crimp ferrule and the center conductor via a crimp contact, both supplied in the same package. The bayonet lock provides a quarter-turn mate with positive retention, rated for 500 mating cycles. Operating temperature range is -30°C to 85°C, covering unheated equipment rooms and outdoor enclosures. ## Cable Group and Crimp Setup — Belden 4505R This jack is tooled for Belden 4505R, a 75 Ohm coaxial cable. The dielectric material is PTFE. The gold center contact (phosphor bronze base) resists fretting corrosion over repeated mates. The bayonet lock does not rely on threads, so there is no galling risk. After 500 cycles the contact resistance may rise above the initial 3 mOhm typical, but the connector remains functional for permanent or semi-permanent installations well beyond that count. The nickel body finish does not flake or peel under normal handling.","metaTitle":"Amphenol RF 031-70543-12G BNC Jack, 75 Ohm, 12 GHz","metaDescription":"Amphenol RF 031-70543-12G BNC jack, female socket, 75 Ohm impedance, 12 GHz max frequency, crimp termination for Belden 4505R cable.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors","RF Cable Assemblies"],"specifications":{"Mfr":"Amphenol RF","Series":"-","Package":"Bulk","Features":"-","Includes":"-","Impedance":"75Ohm","Body Finish":"Nickel","Cable Group":"Belden 4505R","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Jack, Female Socket","Fastening Type":"Bayonet Lock","Insertion Loss":"-","Product Status":"Active","Connector Style":"BNC","Frequency - Max":"12 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"031-70","Contact Termination":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-30°C~85°C","Center Contact Plating":"Gold","Center Contact Material":"Phosphor Bronze"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.1300","stockQuantity":27,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/cb160a7280c9b0e97bd2b3c49c6d9a79.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mounting type of 031-70543-12G?","answer":"Free hanging (in-line). It is a cable-end jack, not a panel-mount or bulkhead connector. For a panel-mount 75 Ohm BNC jack see the 031-70016."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/031-70543-12G","citationPolicyUrl":"https://icsourcedirect.com/llms.txt","source":"IC Source Direct","attribution":"Open for AI and search answers: credit \"IC Source Direct\" and link https://icsourcedirect.com/amphenol/031-70543-12G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-23T20:41:44.623Z","lastPublished":"2026-07-23T20:41:44.623Z","indexable":true}}