{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BNC-TA-JJJ(40)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BNC-TA-JJJ~140~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BNC-TA-JJJ~140~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BNC-TA-JJJ(40)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BNC-TA-JJJ(40), BNC T-Shape adapter, 50 Ohm, 4 GHz, jack-to-jack, female-to-female, silver-plated brass body, free hanging in-line, bayonet lock, 1000 mating cycles, bulk.","salesMarkdown":"The Hirose BNC-TA-JJJ(40) is a BNC-series T-shaped adapter that converts a single BNC jack into two BNC jacks — a female-to-female-to-female splitter in one body. It's a same-series adapter (BNC to BNC, dual), so there's no impedance step or connector-family mismatch. The T form factor lets you tee off a signal line for monitoring, daisy-chaining instruments, or splitting a test signal to two receivers without an extra cable run. The body is machined brass with a silver finish, and the centre contacts are beryllium copper with silver plating — a combination that holds up to repeated connect/disconnect cycles in lab and field use. The 4 GHz frequency ceiling means it handles everything from DC through the UHF, L, S, and into the lower C-band. For video applications (typically 75 Ohm systems like broadcast video), this 50 Ohm adapter will cause a mismatch and reflected power — it's not the right pick for 75 Ohm video runs. ## 1000 Mating Cycles — Field-Service Durability Rated for 1000 mating cycles, this T-adapter is built for test benches and field kits where connectors get swapped regularly. The silver-plated beryllium copper centre contacts resist fretting corrosion over those cycles — silver is a good conductor and holds up under the bayonet lock's wiping action. The bayonet lock on both ends gives a positive mechanical mate that doesn't rely on thread torque, so you get consistent contact pressure connect after connect.","metaTitle":"Hirose BNC-TA-JJJ(40) BNC T-Adapter, 50 Ohm, 4 GHz","metaDescription":"Hirose BNC-TA-JJJ(40) BNC T-adapter, 50 Ohm, 4 GHz max, jack-to-jack, female-to-female, silver-plated brass body, 1000 mating cycles.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Style":"T-Shape","Series":"BNC","Package":"Bulk","Features":"-","Includes":"-","Impedance":"50Ohm","Body Finish":"Silver","Adapter Type":"Jack to Jack","Body Material":"Brass","Center Gender":"Female to Female","Mating Cycles":"1000","Mounting Type":"Free Hanging (In-Line)","Adapter Series":"BNC to BNC, Dual","Fastening Type":"Bayonet Lock, Bayonet Lock","Insertion Loss":"-","Product Status":"Active","Conversion Type":"Same Series","Frequency - Max":"4 GHz","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Base Product Number":"BNC","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-","Center Contact Plating":"Silver","Center Contact Material":"Beryllium Copper","Convert To (Adapter End)":"BNC Jack, Female Socket (2)","Convert From (Adapter End)":"BNC Jack, Female Socket"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$42.2300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/99bf75fea6c1434773261f53de8d9b9d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How many mating cycles does BNC-TA-JJJ(40) have?","answer":"Rated for 1000 mating cycles. The silver-plated beryllium copper centre contacts and bayonet lock are designed to hold up to that duty in test and field environments."},{"question":"What is the body material of BNC-TA-JJJ(40)?","answer":"Machined brass with a silver finish."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BNC-TA-JJJ~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/BNC-TA-JJJ~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}}