{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1-1478039-0","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"1-1478039-0","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1-1478039-0","factsUrl":"https://icsourcedirect.com/api/mcp/products/1-1478039-0","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity Greenpar BNC T-Shape adapter, 1-1478039-0, 75 Ohm, 2 GHz max, BNC Plug to Dual BNC Jack, silver-plated brass body, PTFE dielectric, 500 mating cycles, free-hanging in-line.","salesMarkdown":"The TE Connectivity Greenpar 1-1478039-0 is a T-shaped BNC adapter — a BNC plug on one end splitting into two BNC jacks. It's a same-series (BNC to BNC) conversion adapter, meaning it joins two BNC cables or devices to a single source, or splits a signal line. The 75 Ohm impedance and 2 GHz frequency ceiling place it squarely in the video, broadcast, and CCTV domain — not the 50 Ohm world of RF test gear. The body is silver-plated brass, the centre contacts are silver-plated brass, and the dielectric is PTFE, giving it the temperature range and signal stability for rack-mounted or field video distribution. The 75 Ohm impedance is the headline spec — this adapter is designed for 75 Ohm systems. Plugging it into a 50 Ohm line creates an impedance mismatch that reflects signal and degrades performance above a few MHz. The 2 GHz max frequency is typical for 75 Ohm BNC; at that frequency the PTFE dielectric and silver-plated contacts keep insertion loss manageable. 500 mating cycles is a moderate rating — fine for a semi-permanent install or occasional re-patching, but not for a daily-use test bench where you'd want a 1,000-cycle part. The plug end (male pin) mates with any standard BNC jack (female socket). The two jack ends (female sockets) accept any standard BNC plug (male pin). It's a straight same-series adapter — no gender changers or series adapters needed. The bayonet lock is standard BNC; hand-tighten a quarter-turn and it's seated. The 500-cycle rating means the silver plating on the centre contacts will hold up through a reasonable number of mate-unmate cycles before the plating wears and contact resistance drifts.","metaTitle":"TE Greenpar 1-1478039-0 BNC T Adapter, 75 Ohm, 2 GHz","metaDescription":"TE Connectivity Greenpar 1-1478039-0 BNC T adapter, 75 Ohm, 2 GHz max, 500 mating cycles. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Style":"T-Shape","Series":"Greenpar","Package":"Bulk","Features":"-","Includes":"-","Impedance":"75 Ohms","Body Finish":"Silver","Adapter Type":"Plug to Jack","Body Material":"Brass","Center Gender":"Female to Male","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line)","Adapter Series":"BNC to BNC, Dual","Fastening Type":"Bayonet Lock, Bayonet Lock","Insertion Loss":"-","Product Status":"Obsolete","Conversion Type":"Same Series","Frequency - Max":"2 GHz","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Base Product Number":"1478039","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C ~ 165°C","Center Contact Plating":"Silver","Center Contact Material":"Brass","Convert To (Adapter End)":"BNC Jack, Female Socket (2)","Convert From (Adapter End)":"BNC Plug, Male Pin"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/d41cb85c1aa92d268fa7a35adea0dabf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the impedance of 1-1478039-0?","answer":"The 1-1478039-0 is a 75 Ohm adapter. It is designed for 75 Ohm systems (video, broadcast, CCTV) and should not be used in 50 Ohm RF applications due to impedance mismatch."},{"question":"Can 1-1478039-0 be used for 50 ohm applications?","answer":"No. The 1-1478039-0 is a 75 Ohm adapter. Using it in a 50 Ohm system creates an impedance mismatch that degrades signal integrity, especially at higher frequencies."},{"question":"What is the replacement for 1-1478039-0?","answer":"No official replacement or successor order code has been published by TE Connectivity for the 1-1478039-0. For BOM lines specifying this exact part, sourcing is through surplus or broker inventory against an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1-1478039-0","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/te-connectivity-amp-connectors/1-1478039-0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:25.888Z","lastPublished":"2026-07-20T14:34:25.888Z","indexable":true}}