{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"112740-13","brand":"Amphenol","brandSlug":"amphenol","productSlug":"112740-13","canonicalUrl":"https://icsourcedirect.com/amphenol/112740-13","factsUrl":"https://icsourcedirect.com/api/mcp/products/112740-13","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF BNC jack, 75 Ohm, 1 port, bulkhead front-side nut, solder termination, gold body and center contact, 4 GHz max, 500 mating cycles.","salesMarkdown":"The 112740-13: Its 75 Ohm impedance targets video distribution, telecom baseband, and test equipment where signal reflection matters more than power handling. The connector ships as a kit — one jack, one lockwasher, one nut — so a panel-mount install needs nothing else from the hardware drawer. ## What the 75 Ohm Rating Means for Your Signal Chain A 75 Ohm BNC on a 50 Ohm line creates a 1.5:1 VSWR bump at the interface, which is fine for DC or low-frequency control but eats into the return-loss budget above a few hundred MHz. This connector is built for the 75 Ohm ecosystem: RG6, RG59, and the Belden 1505A/1694A cable families. The 4 GHz bandwidth and 0.2 dB insertion loss cover the full SDI video range and most telecom T1/ paths with margin. ## Mounting and Termination — Board Edge or Bulkhead Two mounting options in one part. For a panel feed-through, the bulkhead front-side nut clamps the connector to a chassis cutout; the included lockwasher keeps the nut from backing off under vibration. The brass body with gold finish resists corrosion in indoor equipment racks and field-terminated enclosures alike.","metaTitle":"Amphenol RF 112740-13 BNC Jack, 75 Ohm, 4 GHz, Bulk","metaDescription":"Amphenol RF 112740-13 BNC jack, 75 Ohm impedance, 4 GHz max frequency, 500 mating cycles. Includes connector, lockwasher, nut.","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 Lockwasher, 1 Nut","Impedance":"75Ohm","Body Finish":"Gold","Cable Group":"-","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Board Edge, End Launch; Panel Mount","Connector Type":"Jack, Female Socket","Fastening Type":"Bayonet Lock","Insertion Loss":"0.2dB","Product Status":"Active","Voltage Rating":"500 V","Connector Style":"BNC","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"Bulkhead - Front Side Nut","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"112740","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Phosphor Bronze"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.9700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/3e5c206b2dad0209e54b50b07afd54ca.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/112740-13/alternatives.json"},"ai":{"faq":[{"question":"Does the 112740-13 include mounting hardware?","answer":"Yes, it ships as a 3-piece kit: one BNC jack, one lockwasher, and one nut. No additional hardware is needed for a panel-mount installation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/112740-13","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/112740-13 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}}