{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"531-40188","brand":"Amphenol","brandSlug":"amphenol","productSlug":"531-40188","canonicalUrl":"https://icsourcedirect.com/amphenol/531-40188","factsUrl":"https://icsourcedirect.com/api/mcp/products/531-40188","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol F Type plug, male pin, 75 Ohm, 1 GHz, crimp termination, RG-179 cable group, nickel body, includes connector + contact + ferrule, Bulk.","salesMarkdown":"## 75 Ohm F Type Plug for RG-179 Coaxial Cable The Amphenol 531-40188 is an F type plug, male pin connector built for 75 Ohm coaxial systems. It mates with standard F type jacks via a threaded coupling nut, giving a secure, vibration-resistant connection on satellite, CATV, and broadband video equipment. The 1 GHz frequency ceiling matches the band used by most cable TV distribution and off-air antenna feeds. This is a crimp-termination kit — the order code delivers the connector body, the centre contact, and the ferrule as a set, so there is no separate sourcing of the crimp ring. ## Cable Group and Termination Match This plug is dimensioned for RG-179, 179A, 179B, 187, 187A, Belden 9221, and M17/94-RG179 cables — all 75 Ohm, small-diameter coax with a solid or stranded centre conductor around 0.7 mm. The crimp ferrule compresses over the cable jacket and braid; the centre contact crimps onto the centre conductor. The PTFE dielectric in the connector matches the cable dielectric, keeping the 75 Ohm impedance continuous through the joint. Using the wrong cable group changes the impedance step and degrades return loss at the connector. ## Construction and Environmental Range The body is machined brass with a nickel finish — corrosion-resistant for indoor and protected outdoor enclosures, though the -40°C to 60°C operating range limits it to equipment that stays above freezing. The threaded coupling nut holds the pair together without a secondary latch. Free-hanging (in-line) mounting means this plug terminates a cable end and floats in the harness, not panel-mounted.","metaTitle":"Amphenol 531-40188 F Type Plug, 75 Ohm, 1 GHz, RG-179","metaDescription":"Amphenol 531-40188 F type plug, male pin, 75 Ohm impedance, 1 GHz max frequency. Crimp termination, RG-179 cable group. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors","RF Cable Assemblies"],"specifications":{"Mfr":"Amphenol RF","Series":"-","Package":"Bulk","Features":"-","Includes":"3 pcs - 1 Connector, 1 Contact, 1 Ferrule","Impedance":"75Ohm","Body Finish":"Nickel","Cable Group":"RG-179, 179A, 179B, 187, 187A, Belden 9221, M17/94-RG179","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"-","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Plug, Male Pin","Fastening Type":"Threaded","Insertion Loss":"-","Product Status":"Active","Connector Style":"F Type","Frequency - Max":"1 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"531","Contact Termination":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C~60°C","Center Contact Plating":"Tin","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.8600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/a31dbbe52039390b9c093700179392ae.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/531-40188/alternatives.json"},"ai":{"faq":[{"question":"What cable does the Amphenol 531-40188 use?","answer":"The 531-40188 is designed for RG-179, 179A, 179B, 187, 187A, Belden 9221, and M17/94-RG179 coaxial cables — all 75 Ohm, small-diameter types with a braided shield."},{"question":"Is 531-40188 a BNC connector?","answer":"No, the 531-40188 is an F type plug, not a BNC. F type connectors use a threaded coupling nut and are standard on CATV and satellite equipment; BNC uses a bayonet lock and is common on test equipment and video surveillance."},{"question":"Where can I buy 531-40188?","answer":"The 531-40188 is available through independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/531-40188","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/531-40188 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}}