{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"31-5900","brand":"Amphenol","brandSlug":"amphenol","productSlug":"31-5900","canonicalUrl":"https://icsourcedirect.com/amphenol/31-5900","factsUrl":"https://icsourcedirect.com/api/mcp/products/31-5900","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF BNC plug, male pin, 50 Ohm, 4 GHz, 500 V, 0.2 dB insertion loss, crimp termination, nickel-plated zinc body, gold-plated brass center contact, for RG-59 plenum/Belden 1506/82108/9104 cable.","salesMarkdown":"## 50-Ohm BNC Plug for RG-59 Plenum and Belden CCTV Cable The 31-5900: It terminates to RG-59 plenum cable, including Belden 1506, 82108, and 9104, using a crimp-on shield and center contact. The nickel-plated zinc die-cast body and gold-plated brass center contact give it the corrosion resistance and mating-cycle durability expected of a field-installed BNC — 500 cycles on the bayonet lock. Rated 500 V, it handles the voltage levels typical of CCTV video, baseband test signals, and low-power RF distribution where the cable run stays within the 4 GHz bandwidth. ## How It Compares to 31-315-RFX and 31-320-RFX Both 31-315-RFX and 31-320-RFX are also 50-Ohm BNC plugs with the same 4 GHz ceiling, 500 V rating, and 0.2 dB insertion loss. The difference is the cable group: 31-315-RFX fits RG-174, 188, 316, LMR-100 — thinner, more flexible cables — while 31-320-RFX fits RG-58, 141, LMR-195. The 31-5900 is the only one of the three that targets RG-59 plenum and the Belden 1506/82108/9104 series, which are common in plenum-rated CCTV and building-security runs. The 31-320-RFX also offers a solder option on the center contact; the 31-5900 is crimp-only.","metaTitle":"Amphenol RF 31-5900 BNC Plug, 50 Ohm, 4 GHz","metaDescription":"Amphenol RF 31-5900 BNC plug, male pin, 50 Ohm, 4 GHz max, 500 V, 0.2 dB insertion loss. Crimp termination for RG-59 plenum/Belden 1506/82108/9104.","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":"4 pcs - 1 Connector, 1 Contact, 2 Ferrules","Impedance":"50Ohm","Body Finish":"Nickel","Cable Group":"RG-59 Plenum, Belden 1506, 82108, 9104","Body Material":"Zinc Die Cast","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":"31-590","Contact Termination":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE), Polymethylpentene (PMP)","Operating Temperature":"-55°C~85°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.9000","stockQuantity":21,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/92b172f61303f7c8fa99c18ab59bb8b4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What cable does the 31-5900 connect to?","answer":"The 31-5900 is designed for RG-59 plenum cable, specifically Belden 1506, 82108, and 9104. It uses crimp termination for both the shield and center contact."},{"question":"What is the difference between 31-5900 and 31-315-RFX?","answer":"Both are 50-Ohm BNC plugs with the same frequency and voltage ratings, but the 31-5900 fits RG-59 plenum cable (Belden 1506/82108/9104), while the 31-315-RFX fits thinner cables like RG-174, 188, and LMR-100. The 31-5900 includes two ferrules; the 31-315-RFX includes one ferrule and an insulator."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/31-5900","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/31-5900 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}}