{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"031-70221","brand":"Amphenol","brandSlug":"amphenol","productSlug":"031-70221","canonicalUrl":"https://icsourcedirect.com/amphenol/031-70221","factsUrl":"https://icsourcedirect.com/api/mcp/products/031-70221","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF BNC jack, female socket, 75 Ohm, 3 GHz, panel mount right angle, solder termination, gold center contact, 500 V, 500 mating cycles.","salesMarkdown":"The 031-70221: The 75 Ohm characteristic impedance tells you this is a video-grade BNC — not the 50 Ohm variant used in RF test equipment — so it pairs with RG-59, RG-6, and similar 75 Ohm cable types. Rated to 3 GHz maximum frequency, it covers standard-definition, HD-SDI, and 3G-SDI signal paths without the insertion loss penalty you'd see pushing a 50 Ohm BNC past 1 GHz on a 75 Ohm line. The right-angle through-hole termination with bulkhead front-side nut mounting lets the connector sit flush against the panel face while the PCB-mount pins route parallel to the board. That orientation saves depth in shallow enclosures — broadcast switchers, video patch panels, and camera interface boxes where the rear panel is tight against the chassis wall. The kit includes the lockwasher and nut, so the panel cutout is the only additional prep needed. The PTFE holds its dielectric constant across temperature swings, which keeps the 75 Ohm impedance stable when the connector is in an outdoor broadcast truck or an unheated equipment shed. The nickel-plated brass body handles the ground return and the bayonet lock gives a positive mechanical mate that won't vibrate loose under fan or vehicle vibration. ## 75 Ohm vs 50 Ohm — the Impedance Choice Drives the Signal Path The 75 Ohm impedance of the 031-70221 is the primary selection gate. A 50 Ohm BNC like the 031-5329-52RFX will physically mate with the same bayonet lock and panel cutout, but the impedance mismatch at the junction creates a reflection that degrades the signal above a few hundred MHz. For video baseband and digital video up to 3 GHz, the 75 Ohm path is the correct one. The 031-70016 is the same 75 Ohm impedance but uses crimp shield termination instead of solder — choose the 031-70221 when you want a soldered shield connection for field reliability or when the cable jacket won't accept a crimp ferrule.","metaTitle":"Amphenol RF 031-70221 BNC Jack, 75 Ohm, 3 GHz, Right Angle","metaDescription":"Amphenol RF 031-70221 BNC jack, female socket, 75 Ohm impedance, 3 GHz max frequency, panel mount right angle, solder termination, 500 V rating, gold-plated","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 Lockwasher, 1 Nut","Impedance":"75Ohm","Body Finish":"Nickel","Cable Group":"-","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"500","Mounting Type":"Panel Mount, Through Hole, Right Angle","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":"3 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"Bulkhead - Front Side Nut","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"031-70","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Phosphor Bronze"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.4800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ad0b11537c4e3009338ed332983400fb.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/031-70221/alternatives.json"},"ai":{"faq":[{"question":"Does 031-70221 come with mounting hardware?","answer":"Yes, the package includes 3 pieces: the connector, one lockwasher, and one nut. The bulkhead front-side nut mounting requires only the panel cutout — the hardware is in the bag."},{"question":"Is 031-70221 compatible with RG59 cable?","answer":"The 75 Ohm impedance is correct for RG-59 and similar 75 Ohm video cables."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/031-70221","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/031-70221 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}}