{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"31-318-RFX","brand":"Amphenol","brandSlug":"amphenol","productSlug":"31-318-RFX","canonicalUrl":"https://icsourcedirect.com/amphenol/31-318-RFX","factsUrl":"https://icsourcedirect.com/api/mcp/products/31-318-RFX","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF BNC jack, female socket, 50 Ohm, 4 GHz, 500 V, panel mount bulkhead, crimp termination, gold center contact, 5-piece kit.","salesMarkdown":"The 31-318-RFX is part of the 31-318 series of RF coaxial connectors, built for RG-174, RG-316, and LMR-100 class cables. The 4 GHz frequency maximum covers the full BNC band for most lab and field applications; above that, the connector's geometry introduces a standing-wave ratio that degrades signal integrity. The insertion loss is rated at 0.2 dB, typical for a well-terminated BNC at these frequencies. This jack accepts RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 cables — all small-diameter coax with a nominal impedance of 50 Ohms. It does not accept RG-58 class cables (that is the 31-320-RFX variant). Both the shield and the center contact are crimp-terminated, which gives a consistent, repeatable termination for field installation. ## Panel Mount and Kit Contents The connector mounts in a bulkhead panel using the front-side nut — the lockwasher and nut are included in the kit. The bayonet lock provides a quick, positive mate with the matching BNC plug.","metaTitle":"Amphenol RF 31-318-RFX BNC Jack, 50 Ohm, 4 GHz, Bulkhead","metaDescription":"Amphenol RF 31-318-RFX BNC jack, female socket, 50 Ohm impedance, 4 GHz max, 500 V. Panel mount bulkhead, crimp termination. Includes 5-piece kit.","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 Lockwasher, 1 Nut","Impedance":"50Ohm","Body Finish":"Nickel","Cable Group":"RG-174, 188, 188A, 316, LMR-100, M17/119-RG174","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"500","Mounting Type":"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":"Crimp","Base Product Number":"31-318","Contact Termination":"Crimp","Dielectric Material":"Polyoxymethylene (POM) Acetal","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Phosphor Bronze"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.6600","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/31-318-RFX/alternatives.json"},"ai":{"faq":[{"question":"What cables are compatible with 31-318-RFX?","answer":"The 31-318-RFX accepts RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 cables. It does not accept RG-58 class cables."},{"question":"Does 31-318-RFX include mounting hardware?","answer":"Yes, the 5-piece kit includes the connector body, crimp contact, ferrule, lockwasher, and nut — all needed for a bulkhead panel mount."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/31-318-RFX","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/31-318-RFX 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}}