{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"221551-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"221551-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/221551-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/221551-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity 221551-1 BNC jack-to-jack adapter, straight, female-to-female, 50 Ohm impedance, free-hanging in-line, nickel body, PTFE dielectric, silver-plated phosphor bronze center contacts, bayonet lock.","salesMarkdown":"## What this BNC adapter is and what it does The TE Connectivity 221551-1 is a straight BNC jack-to-jack adapter — a female-to-female barrel coupler that lets you join two BNC male-terminated cables end-to-end. It is a same-series adapter (BNC to BNC), so there is no impedance or interface conversion; it simply extends or bridges a BNC signal path. Rated at 50 Ohms impedance, this adapter is built for standard 50 Ohm BNC systems — test equipment, instrumentation, RF lab setups, and video distribution where the characteristic impedance of the cable and connectors match. The PTFE dielectric keeps the impedance stable across frequency and temperature, and the silver-plated phosphor bronze center contacts give low and repeatable contact resistance through multiple mate cycles. The body carries a nickel finish — standard for commercial BNC hardware, providing corrosion resistance that holds up in indoor lab, bench, and field-service environments. Both ends use a bayonet lock (quarter-turn, no tools), so you can mate or break the connection quickly without unscrewing anything. This is a free-hanging (in-line) adapter — it is not designed for panel or bulkhead mounting. It sits between two cable assemblies, making it the right choice for extending a coax run or converting a male-to-male connection into a male-to-female one at the adapter midpoint. ## Impedance and signal-path fit This adapter is rated at 50 Ohms impedance, matching standard 50 Ohm BNC systems. The straight body style keeps the signal path straight through the adapter.","metaTitle":"TE 221551-1 BNC Jack-to-Jack Adapter, 50 Ohm, Straight","metaDescription":"TE 221551-1 BNC female-to-female adapter, 50 Ohm impedance, straight in-line. Nickel body, PTFE dielectric, silver-plated contacts.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Style":"Straight","Series":"-","Package":"Bulk","Features":"-","Includes":"-","Impedance":"50 Ohms","Body Finish":"Nickel","Adapter Type":"Jack to Jack","Body Material":"-","Center Gender":"Female to Female","Mating Cycles":"-","Mounting Type":"Free Hanging (In-Line)","Adapter Series":"BNC to BNC","Fastening Type":"Bayonet Lock, Bayonet Lock","Insertion Loss":"-","Product Status":"Active","Conversion Type":"Same Series","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Base Product Number":"221551","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-","Center Contact Plating":"Silver","Center Contact Material":"Phosphor Bronze","Convert To (Adapter End)":"BNC Jack, Female Socket","Convert From (Adapter End)":"BNC Jack, Female Socket"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.3000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/da85f53601b058135ad560b12cbc5192.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is 221551-1 used for?","answer":"The 221551-1 is a BNC female-to-female barrel coupler used to join two BNC male-terminated cables end-to-end, extending the cable run or bridging a signal path without changing impedance or connector type."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/221551-1","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/221551-1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}