{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"919-421P-71S12G","brand":"Amphenol","brandSlug":"amphenol","productSlug":"919-421P-71S12G","canonicalUrl":"https://icsourcedirect.com/amphenol/919-421P-71S12G","factsUrl":"https://icsourcedirect.com/api/mcp/products/919-421P-71S12G","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF MCX plug, male pin, 75 Ohm, 12 GHz, snap-on, crimp termination, gold body, 500 mating cycles, bulk kit.","salesMarkdown":"## MCX Plug for 75-Ohm Cable Assemblies The 919-421P-71S12G: It covers DC through 12 GHz, making it suitable for video, broadcast, and high-speed data links where 75-Ohm infrastructure is standard. The snap-on coupling gives a positive lock without requiring a threaded collar, which speeds up field mating and unmating in dense patch panels. The centre pin is brass with gold plating; the body is beryllium copper and brass with a gold finish. Gold-over-brass on the centre contact and gold on the body give this plug corrosion resistance and stable contact resistance over repeated matings — the rated 500 mating cycles reflect that plating grade. The PTFE dielectric holds its dielectric constant across that span, so the 75-Ohm impedance stays consistent through temperature swings. This plug is specified for Belden 4855R cable, a 75-Ohm precision video coax. For the harness builder: the ferrule in the kit matches the cable jacket diameter of 4855R; using a different cable group will change the crimp die and may shift the impedance match. Stick with the listed cable group unless you verify the dielectric diameter and centre conductor gauge against the contact and ferrule dimensions.","metaTitle":"Amphenol RF 919-421P-71S12G MCX Plug, 75 Ohm, 12 GHz","metaDescription":"Amphenol RF 919-421P-71S12G MCX plug, male pin, 75 Ohm impedance, rated to 12 GHz. Gold-plated beryllium copper/brass body. 500 mating cycles.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Amphenol RF","Series":"-","Package":"Bulk","Features":"-","Includes":"4 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Insulator","Impedance":"75 Ohms","Body Finish":"Gold","Cable Group":"Belden 4855R","Body Material":"Beryllium Copper, Brass","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Plug, Male Pin","Fastening Type":"Snap-On","Insertion Loss":"-","Product Status":"Active","Connector Style":"MCX","Frequency - Max":"12 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"91942","Contact Termination":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C ~ 165°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.8700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/e28589e57e3bca0d50f93d7fb054523f.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/919-421P-71S12G/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 919-421P-71S12G and what is the lead time?","answer":"Submit an RFQ for your target quantity and delivery window."},{"question":"What cable is 919-421P-71S12G compatible with?","answer":"The 919-421P-71S12G is specified for Belden 4855R cable, a 75-Ohm precision video coax. The kit includes the ferrule and contact sized for that cable group."},{"question":"Does 919-421P-71S12G come as a complete kit or just the connector?","answer":"It ships as a complete kit: 1 connector body, 1 crimp contact, 1 ferrule, and 1 PTFE insulator — four pieces total."},{"question":"What is the impedance of the Amphenol 919-421P-71S12G?","answer":"The 919-421P-71S12G is a 75-Ohm impedance connector, rated for use from DC through 12 GHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/919-421P-71S12G","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/919-421P-71S12G 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}}