{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"31-320","brand":"Amphenol","brandSlug":"amphenol","productSlug":"31-320","canonicalUrl":"https://icsourcedirect.com/amphenol/31-320","factsUrl":"https://icsourcedirect.com/api/mcp/products/31-320","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol BNC plug, male pin, 50 Ohm, 4 GHz, crimp termination, bayonet lock, for RG-58/141/303/LMR-195, includes connector + contact + ferrule.","salesMarkdown":"## What This BNC Plug Terminates and How It Ships The 31-320: The kit ships as three pieces: one connector body, one contact, and one ferrule — you supply the cable and the crimp die for the right hex size. ## Cable Group Fit and Termination Reality This plug is specced for RG-58 and its variants (58A, 58B, 58C), plus RG-141, RG-303, LMR-195, and the Belden B7806A/9907. That covers the common 50-ohm thin coax used in test leads, short cable assemblies, and lab interconnects. The shield crimps onto the cable braid; the center contact can be crimped or soldered. Match the crimp die to the ferrule OD — a standard RG-58 BNC die (typically 0.178 or 0.213 hex) seats the ferrule correctly. Wrong die, wrong crimp — the braid won't capture and the pull strength drops. ## Key Specs for the RF Path Insertion loss is 0.2 dB across the band, typical for a well-terminated BNC. Nickel-plated brass body resists corrosion in bench and field use. The 31-320-RFX shares the same BNC plug body, cable group, frequency rating, and 500 mating cycles. The difference is the dielectric: the standard 31-320 uses PTFE, while the -RFX variant uses POM Acetal. For most RG-58 terminations below 4 GHz, the electrical performance is equivalent — the PTFE version is the original spec, the POM variant is a cost-optimized alternative. Both are active. Match the dielectric to your assembly's temperature range if you're regularly cycling above 100°C.","metaTitle":"Amphenol 31-320 BNC Plug, 50 Ohm, RG-58, 4 GHz","metaDescription":"Amphenol 31-320 BNC plug, male pin, 50 Ohm, 4 GHz max, for RG-58 cable groups. Crimp termination, bayonet lock, 500 mating cycles.","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":"50Ohm","Body Finish":"Nickel","Cable Group":"RG-58, 58A, 58B, 58C, 141, 303, LMR-195, Belden B7806A, 9907","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":"Active","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":"31-320","Contact Termination":"Crimp or Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.9700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/92b172f61303f7c8fa99c18ab59bb8b4.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/31-320/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the Amphenol 31-320 and what does it cost?","answer":"Submit an RFQ for your BOM quantity and target lead time."},{"question":"Is the 31-320 compatible with RG-58 cable?","answer":"Yes, the 31-320 is specced for RG-58, 58A, 58B, and 58C, plus RG-141, RG-303, LMR-195, Belden B7806A, and 9907. It's a direct fit for standard 50-ohm RG-58 coax."},{"question":"Does the 31-320 include the contact and ferrule?","answer":"Yes, the kit ships as three pieces: one connector body, one center contact, and one ferrule. You supply the cable and the crimp tool."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/31-320","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/31-320 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}}