{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"31-71033","brand":"Amphenol","brandSlug":"amphenol","productSlug":"31-71033","canonicalUrl":"https://icsourcedirect.com/amphenol/31-71033","factsUrl":"https://icsourcedirect.com/api/mcp/products/31-71033","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF BNC plug, 75 Ohm, male pin, crimp termination, bayonet lock, 4 GHz, 500 mating cycles, nickel body, gold center contact, bulk pack includes connector + contact + ferrule.","salesMarkdown":"The 31-71033: This is the 75 Ohm variant of the standard BNC — the impedance difference is non-negotiable: a 75 Ohm plug on a 50 Ohm line creates a mismatch that degrades return loss across the band. The bayonet lock provides a quarter-turn mate that is faster than a threaded connector and holds against vibration in field-installed runs. This means one order code covers the full termination hardware — no separate sourcing for the centre pin or the crimp ring. This plug is specified for AT&T 735, 735A, and Belden 735A1 cable groups. These are 75 Ohm coaxial cables with a specific dielectric diameter and braid geometry that match the ferrule and centre contact dimensions in this kit. Using a different cable risks an impedance step at the crimp point or a loose braid termination that lifts the insertion loss above the 0.2 dB spec. The shield is terminated via crimp over the ferrule; the centre conductor is crimped into the gold-plated pin. Both crimps should be done with the manufacturer-recommended tooling to get the correct hex profile. ## Lifecycle Status: NRND — Plan the Replacement Now This is not an immediate discontinuation, but it signals that the manufacturer intends to phase out the part. For any new BOM, select an alternative before the design locks. ## Operating Range and Environmental Fit The PTFE dielectric holds its dielectric constant across that range, so the 75 Ohm impedance stays stable.","metaTitle":"Amphenol RF 31-71033 BNC Plug, 75 Ohm, 4 GHz, NRND","metaDescription":"Amphenol RF 31-71033 75 Ohm BNC plug, male pin, crimp termination, 4 GHz, 500 mating cycles. NRND status — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Amphenol RF","Series":"-","Package":"Bulk","Features":"-","Includes":"3 pcs - 1 Connector, 1 Contact, 1 Ferrule","Impedance":"75Ohm","Body Finish":"Nickel","Cable Group":"AT&T 735, 735A, Belden 735A1","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Plug, Male Pin","Fastening Type":"Bayonet Lock","Insertion Loss":"0.2dB","Product Status":"Not For New Designs","Voltage Rating":"500 V","Connector Style":"BNC","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"31-710","Contact Termination":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.9297","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/384a02eadcb76dc002454ac01ab5989b.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/31-71033/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 31-71033 available via RFQ confirmation?","answer":"Submit an RFQ for the quantity and lead time specific to your BOM."},{"question":"Is 31-71033 obsolete?","answer":"The 31-71033 is NRND (Not Recommended for New Designs), not fully obsolete. It remains available for existing production but is not recommended for new designs. No official replacement part number is listed in the lifecycle record."},{"question":"What cable does Amphenol RF 31-71033 work with?","answer":"The 31-71033 is specified for AT&T 735, 735A, and Belden 735A1 cable groups. These are 75 Ohm coaxial cables with the correct dielectric and braid dimensions for the included ferrule and centre contact."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/31-71033","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/31-71033 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}}