{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"034-1140-12G","brand":"Amphenol","brandSlug":"amphenol","productSlug":"034-1140-12G","canonicalUrl":"https://icsourcedirect.com/amphenol/034-1140-12G","factsUrl":"https://icsourcedirect.com/api/mcp/products/034-1140-12G","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF HD-BNC™ series, 034-1140-12G, jack female socket, 75 Ohm, 18 GHz, 1 port, panel mount through hole right angle, bayonet lock, gold/nickel body, 500 mating cycles.","salesMarkdown":"It is a single-port, isolated, bulkhead-mount connector with a right-angle through-hole PCB tail and a bayonet lock. The 75 Ohm impedance and 18 GHz frequency ceiling place it in the HD-BNC class — the higher-density version of the standard BNC that handles 4K and 12G-SDI signal paths without the impedance mismatch a standard 50 Ohm BNC would introduce on a 75 Ohm line. ## 75 Ohm, 18 GHz — the signal-path spec that decides the fit A standard 50 Ohm BNC will physically mate, but the impedance step at the junction creates a reflection that kills signal integrity above a few hundred megahertz. The 18 GHz max frequency tells you this jack is rated for the full 12G-SDI data rate (12 Gbps) and beyond — the PTFE dielectric and beryllium copper center contact keep the transmission line clean through that band. ## Mounting and termination — bulkhead feed-through with a right-angle PCB tail The 034-1140-12G mounts through a panel bulkhead with a front-side nut and terminates to the PCB via a right-angle through-hole solder tail. The gold and nickel body finish resists corrosion in the panel opening. The bayonet lock gives a positive tactile lock without the thread wear of a screw-on connector. The closest functional peer in the HD-BNC series is the 034-1131-12G — a 2-port version of the same 75 Ohm, 18 GHz, isolated, bulkhead-mount jack. The 034-1140-12G is the single-port variant. If your BOM calls for two independent signal paths through one panel opening, the 034-1131-12G saves a second cutout. Against a standard 75 Ohm BNC like the 031-70578-12G (12 GHz max), the HD-BNC's 18 GHz ceiling gives headroom for 12G-SDI and emerging UHD standards that a standard BNC cannot guarantee.","metaTitle":"Amphenol RF 034-1140-12G HD-BNC Jack, 75 Ohm, 18 GHz","metaDescription":"Amphenol RF 034-1140-12G HD-BNC jack, 75 Ohm, 18 GHz max frequency, 500 mating cycles. Panel mount, through hole, right angle.","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":"HD-BNC™","Package":"Bag","Features":"Isolated","Includes":"-","Impedance":"75 Ohms","Body Finish":"Gold; Nickel","Cable Group":"-","Body Material":"Brass","Housing Color":"Gold, Silver","Mating Cycles":"500","Mounting Type":"Panel Mount, Through Hole, Right Angle","Connector Type":"Jack, Female Socket","Fastening Type":"Bayonet Lock","Insertion Loss":"-","Product Status":"Active","Connector Style":"BNC, HD","Frequency - Max":"18 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"Bulkhead - Front Side Nut","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"034-11","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C ~ 85°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.3900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/fa7fcf457716e58a781a9a5506890c9b.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/034-1140-12G/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/034-1140-12G","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/034-1140-12G 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}}