{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"531-40051","brand":"Amphenol","brandSlug":"amphenol","productSlug":"531-40051","canonicalUrl":"https://icsourcedirect.com/amphenol/531-40051","factsUrl":"https://icsourcedirect.com/api/mcp/products/531-40051","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol 531-40051, G-type RF jack, female socket, 75 Ohm impedance, 1 GHz max frequency, through hole, solder termination, snap-on coupling, brass body with tin finish, 100 mating cycles.","salesMarkdown":"The brass body with a tin finish keeps the cost down for indoor, controlled-environment installations, while the snap-on fastening type gives a quick, positive mate without the torque of a threaded coupling. The through-hole mounting with solder termination is straightforward for a standard PCB or panel-mount layout, and the PTFE dielectric provides stable electrical performance across the rated -40°C to 60°C operating range. A 50 Ohm connector in a 75 Ohm line creates a mismatch that reflects signal energy, degrading the picture or data at the far end. The 1 GHz maximum frequency is adequate for standard-definition and most high-definition analog video (which runs below 1 GHz), but it is not a candidate for modern multi-gigabit digital video interfaces like 3G-SDI or 12G-SDI, which push into the 3-12 GHz range. Compared to the Amphenol 252151-75 MCX jack (which also runs 75 Ohm but reaches 6 GHz), the 531-40051 trades bandwidth for a different mechanical interface — the G-type form factor is larger and more robust than the subminiature MCX, making it easier to handle in field installations where the connector sees occasional reconnection. ## Mating Cycles and Body Finish — What the 100-Cycle Rating Means for Deployment The 100 mating cycles rating reflects the tin body finish and the snap-on coupling mechanism. Tin-on-brass is a cost-effective plating choice, but it wears faster than gold-on-brass under repeated connect/disconnect cycles — the tin surface oxidizes and the snap-on detent loses retention force over time. For a connector that is mated once during equipment assembly and rarely touched again, 100 cycles is more than adequate. For a test-point or a frequently serviced panel connection, the 500-cycle gold-plated MCX or MMCX alternatives (such as the 252151-75 or 908-22100) would be a better fit.","metaTitle":"Amphenol 531-40051 G-Type Jack, 75 Ohm, 1 GHz, Through Hole","metaDescription":"Amphenol 531-40051 G-type RF jack, 75 Ohm impedance, 1 GHz max frequency, brass body with tin finish, snap-on coupling, 100 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":"-","Impedance":"75Ohm","Body Finish":"Tin","Cable Group":"-","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"100","Mounting Type":"Through Hole","Connector Type":"Jack, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"-","Product Status":"Active","Connector Style":"G Type","Frequency - Max":"1 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"531","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C~60°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.7100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/4fae7e7d83050da20cc430659f8b34a4.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/531-40051/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the Amphenol 531-40051 and how do I get a price?","answer":"The 531-40051 is available to order through independent distribution. Submit an RFQ for current pricing and lead time — availability is confirmed at quote time, and the part is quoted against your specific BOM quantity."},{"question":"What is the difference between the 531-40051 and the 252151-75?","answer":"The 531-40051 is a G-type jack with a 1 GHz frequency limit and a tin body finish rated for 100 mating cycles. The 252151-75 is an MCX jack rated to 6 GHz with a gold body finish and 500 mating cycles — both are 75 Ohm, but the MCX form factor is smaller and the gold finish supports higher cycle life and better corrosion resistance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/531-40051","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/531-40051 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}}