{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"2-5221128-3","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"2-5221128-3","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/2-5221128-3","factsUrl":"https://icsourcedirect.com/api/mcp/products/2-5221128-3","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity BNC plug, male pin, 50 Ohm, 4 GHz, crimp termination for RG-179/187, bayonet lock, 500 mating cycles, includes connector, contact, ferrule, sleeve.","salesMarkdown":"## 50 Ohm BNC Plug for RG-179/187 — Now Obsolete It's a crimp-termination connector built for RG-179 and RG-187 coaxial cables, with a bayonet lock for quick, secure mating. The kit includes the connector body, one contact, one ferrule, and one sleeve — four pieces total, ready for field assembly. Rated for a maximum frequency of 4 GHz and a voltage rating of 500 V. The 50 Ohm impedance is standard for test equipment and telecom. Gold plating on the brass centre contact ensures reliable electrical performance over 500 mating cycles — a solid field-service life for a crimp connector. ## Lifecycle: Officially Obsolete For buyers with a BOM line that calls out 2-5221128-3, the sourcing channel is the surplus and broker market. Do not assume stock; the obsolete status means each procurement needs a fresh check. ## Cable Fit: RG-179 and RG-187 This plug is designed for RG-179 and RG-187 coaxial cables. The crimp termination for centre contact and shield braid provides a reliable assembly. The 4 GHz frequency ceiling is the hard limit for this connector's electrical performance. Beyond that, the insertion loss and VSWR will degrade. The 500 mating cycles mean it's built for repeated connect-disconnect in test or field-service roles, not a one-time permanent install. The 0.2 dB insertion loss at rated frequency is typical for a quality BNC plug.","metaTitle":"TE 2-5221128-3 BNC Plug, 50 Ohm, 4 GHz, Obsolete","metaDescription":"TE Connectivity 2-5221128-3 BNC plug, male pin, 50 Ohm impedance, 4 GHz max, crimp termination for RG-179/187. Obsolete; sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Series":"-","Package":"Bulk","Features":"-","Includes":"4 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Sleeve","Impedance":"50 Ohms","Body Finish":"Nickel","Cable Group":"RG-179, 187","Body Material":"Zinc","Housing Color":"Silver","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Plug, Male Pin","Fastening Type":"Bayonet Lock","Insertion Loss":"0.2dB","Product Status":"Obsolete","Voltage Rating":"500 V","Connector Style":"BNC","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"5221128","Contact Termination":"Crimp","Dielectric Material":"Polyethylene (PE)","Operating Temperature":"-55°C ~ 85°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.2200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/8e92a7703e590f9bdb84c8d243034a4e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What cable does 2-5221128-3 fit?","answer":"It fits RG-179 and RG-187 coaxial cables. The kit includes the connector, contact, ferrule, and sleeve for a complete crimp termination."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/2-5221128-3","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/2-5221128-3 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}}