{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"142178-75","brand":"Amphenol","brandSlug":"amphenol","productSlug":"142178-75","canonicalUrl":"https://icsourcedirect.com/amphenol/142178-75","factsUrl":"https://icsourcedirect.com/api/mcp/products/142178-75","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol 142178-75 SMB mini plug, 75 Ohm, female socket, solder contact, crimp shield, for RG-179 and RG-187 cable, -65°C to 165°C, 500 mating cycles, Bulk.","salesMarkdown":"The 142178-75 is an SMB mini plug with a 75 Ohm impedance — a snap-on, subminiature RF connector built for RG-179 and RG-187 cable. This is the female socket version, free-hanging, terminated by soldering the centre contact and crimping the shield. The 75 Ohm variant is less common than the 50 Ohm SMB; it's used where the cable plant is already 75 Ohm — think video distribution, broadcast gear, or test equipment that runs on RG-179 or RG-187. This plug accepts RG-179 and RG-187 coax — both 75 Ohm, 2.5 mm to 3 mm diameter cables with a solid or stranded centre conductor. The included heat shrink goes over the ferrule-to-cable transition for strain relief and environmental sealing. ## What the ratings tell you about the duty The 335 V rating is the max working voltage at sea level; at higher altitudes or in low-pressure environments, derate it.","metaTitle":"142178-75 SMB Mini Plug, 75 Ohm, RG-179/187, Active","metaDescription":"142178-75 SMB mini plug, 75 Ohm, for RG-179 and RG-187 cable. Kit includes connector, contact, ferrule, and heat shrink. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Amphenol RF","Series":"-","Package":"Bulk","Features":"-","Includes":"4 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Heat Shrink","Impedance":"75Ohm","Body Finish":"Nickel","Cable Group":"RG-179, 187","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Plug, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"0.3dB","Product Status":"Active","Voltage Rating":"335 V","Connector Style":"SMB, Mini","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"142178","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.8387","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/3beb0931343d167cc4afc2d3b5e442bf.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/142178-75/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 142178-75 and how do I get a price?","answer":"142178-75 is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time. No stock-holding claim; we source per your BOM quantity."},{"question":"What cable does 142178-75 fit?","answer":"142178-75 fits RG-179 and RG-187 coaxial cable, both 75 Ohm types. The centre conductor is soldered, the braid is crimped with the included ferrule."},{"question":"Is 142178-75 compatible with RG-179?","answer":"Yes, RG-179 is one of the two cables listed for this plug. The other is RG-187. Both are 75 Ohm coax with similar diameters."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/142178-75","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/amphenol/142178-75 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-23T20:41:44.623Z","lastPublished":"2026-07-23T20:41:44.623Z","indexable":true}}