{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BNCJ-UMP(40)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BNCJ-UMP~140~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BNCJ-UMP~140~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BNCJ-UMP(40)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BWA series between-series adapter, BNCJ-UMP(40), straight, BNC jack to U.FL (UMCC) plug, 50 Ohm impedance, 2 GHz max frequency, 500 mating cycles, free-hanging inline mount.","salesMarkdown":"## 50 Ohm Between-Series Adapter: BNC Jack to U.FL Plug The Hirose BNCJ-UMP(40) is a straight between-series adapter that converts a BNC jack, female socket to a U.FL (UMCC) plug, female socket. It belongs to the BWA series and is designed for free-hanging inline mounting. The 50 Ohm impedance and 2 GHz max frequency make it suited for test equipment, GPS receivers, and cellular signal paths where a standard BNC interface needs to connect to a miniature U.FL board-level connector. The dielectric material is PTFE, which keeps insertion loss stable across the band and holds the 50 Ohm characteristic impedance through the transition between the two connector families. ## 500 Mating Cycles and Bayonet Lock Retention The BNC end uses a bayonet lock; the U.FL end uses a snap-on retention. Both fastening types give a positive mechanical mate that holds under cable flex, though the U.FL side is a push-on interface — no threading, so the engagement force is low.","metaTitle":"Hirose BNCJ-UMP(40) BNC to U.FL Adapter, 50 Ohm, 2 GHz","metaDescription":"Hirose BNCJ-UMP(40) between-series adapter: BNC jack to U.FL (UMCC) plug, 50 Ohm, 2 GHz max, 500 mating cycles, straight body.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Style":"Straight","Series":"BWA","Package":"Bulk","Features":"-","Includes":"-","Impedance":"50Ohm","Body Finish":"-","Adapter Type":"Plug to Jack","Body Material":"-","Center Gender":"Female to Female","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line)","Adapter Series":"BNC to U.FL (UMCC)","Fastening Type":"Bayonet Lock, Snap-On","Insertion Loss":"-","Product Status":"Active","Conversion Type":"Between Series","Frequency - Max":"2 GHz","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Base Product Number":"BNC","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-","Center Contact Plating":"-","Center Contact Material":"-","Convert To (Adapter End)":"U.FL (UMCC) Plug, Female Socket","Convert From (Adapter End)":"BNC Jack, Female Socket"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$31.7600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/b616e9f43f7ff17cc86a32c39d0fdec2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the impedance of BNCJ-UMP(40)?","answer":"The BNCJ-UMP(40) is a 50 Ohm adapter. That impedance matches standard BNC and U.FL system impedance, so the adapter does not introduce a mismatch at the transition."},{"question":"Is BNCJ-UMP(40) a straight or right-angle adapter?","answer":"It is a straight adapter. The body passes the signal inline without a bend, keeping the cable axis aligned with the connector axis."},{"question":"How many mating cycles does BNCJ-UMP(40) have?","answer":"Rated for 500 mating cycles. That covers repeated use in test fixtures or field reconnections before contact wear becomes a concern."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BNCJ-UMP~140~2","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/hirose-electric-co-ltd/BNCJ-UMP~140~2 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}}