{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"31-70261","brand":"Amphenol","brandSlug":"amphenol","productSlug":"31-70261","canonicalUrl":"https://icsourcedirect.com/amphenol/31-70261","factsUrl":"https://icsourcedirect.com/api/mcp/products/31-70261","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF mini BNC plug, 75 Ohm, 1 port, male pin, crimp shield/solder contact, RG-179/187 cable, 4 GHz, 0.1 dB loss, 500 V, 500 cycles, -40°C to 85°C.","salesMarkdown":"## What's in the Kit — and What Cable It Fits That's everything you need to terminate one cable end — no separate parts to order. The cable group is specific: RG-179, 179A, 179B, 187, 187A, Belden 9221, or M17/94-RG179. If you're working with RG59 or RG6, this is the wrong plug — the ferrule and centre pin diameters won't match. The shield is crimped; the centre contact is soldered. Both are 1-port, male pin, bayonet lock, 500 mating cycles, nickel-plated brass body, and active. The critical difference is impedance: 75 Ohm (31-70261) vs 50 Ohm (31-315-RFX). A 75 Ohm plug on a 50 Ohm cable creates a mismatch that kills return loss above a few hundred MHz. The 31-70261 also runs to 4 GHz with 0.1 dB insertion loss; the 31-315-RFX is spec'd to 4 GHz with 0.2 dB loss, but that's at 50 Ohm. The 31-320-RFX is another 50 Ohm sibling for RG-58 cable, with a crimp or solder centre contact option. If your BOM calls for 75 Ohm, the 31-70261 is the correct pick — don't substitute a 50 Ohm variant.","metaTitle":"Amphenol RF 31-70261 Mini BNC Plug, 75 Ohm, 4 GHz, Crimp","metaDescription":"Amphenol RF 31-70261 mini BNC plug, 75 Ohm, 4 GHz, 500 V, crimp/solder termination, RG-179/187 cable. Active production, sourced to order. Buy 31-70261.","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":"5 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Insulator, 1 Spacer","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":"500","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Plug, Male Pin","Fastening Type":"Bayonet Lock","Insertion Loss":"0.1dB","Product Status":"Active","Voltage Rating":"500 V","Connector Style":"BNC, Mini","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"31-702","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C~85°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.7800","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/31-70261/alternatives.json"},"ai":{"faq":[{"question":"Can 31-70261 be used with RG59 cable?","answer":"No. The cable group for the 31-70261 is RG-179, 179A, 179B, 187, 187A, Belden 9221, and M17/94-RG179. RG59 has a different dielectric diameter and impedance — the ferrule and centre pin won't fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/31-70261","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/31-70261 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}}