{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"925-201J-51S","brand":"Amphenol","brandSlug":"amphenol","productSlug":"925-201J-51S","canonicalUrl":"https://icsourcedirect.com/amphenol/925-201J-51S","factsUrl":"https://icsourcedirect.com/api/mcp/products/925-201J-51S","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol SMPM jack, male pin, 50 Ohm, DC to 40 GHz, panel mount with threaded body, solder shield and contact termination, stainless steel body, gold-plated beryllium copper center contact, Bulk.","salesMarkdown":"## SMPM Jack for Millimeter-Wave Signal Paths The Amphenol 925-201J-51S is an SMPM jack with a male pin, built for DC-to-40 GHz signal paths where the standard SMP interface is too bulky. The 50 Ohm controlled impedance matches the system trace impedance — any mismatch at this frequency band shows up as a reflection that degrades the link budget. The stainless steel body gives it a corrosion-resistant shell that holds up in outdoor or lab environments, and the extended insulation feature increases the creepage distance between the centre conductor and the shell, which matters when the system runs at higher altitudes or in condensing humidity. The smooth bore feature means the mating interface has no detent ramp — insertion force is lower than a full-detent SMPM, making it suited for blind-mate panel-to-module connections where the connector pair is aligned by the chassis hardware, not by the connector itself. The snap-on fastening locks the pair once fully seated; you feel the click when the outer ring engages. ## Mounting and Termination on the Panel The shield termination is solder: you solder the braid or a ground lug to the body. The centre contact also terminates with solder — a cup or a through-hole pad that accepts the centre conductor of the coax cable. Beryllium copper is a standard choice for RF contacts that need to maintain consistent normal force after repeated mates.","metaTitle":"Amphenol 925-201J-51S SMPM Jack, 50 Ohm, 40 GHz, Panel Mount","metaDescription":"Amphenol 925-201J-51S SMPM jack, male pin, 50 Ohm impedance, 40 GHz max frequency. Stainless steel body, gold-plated beryllium copper contact.","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":"Extended Insulation, Smooth Bore","Includes":"-","Impedance":"50Ohm","Body Finish":"-","Cable Group":"-","Body Material":"Stainless Steel","Housing Color":"Silver","Mating Cycles":"100","Mounting Type":"Panel Mount, Threaded","Connector Type":"Jack, Male Pin","Fastening Type":"Snap-On","Insertion Loss":"-","Product Status":"Active","Connector Style":"SMPM","Frequency - Max":"40 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"92520","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.0900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/506a8a46f1a454eee0b25f6a4ec25e47.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/925-201J-51S/alternatives.json"},"ai":{"faq":[{"question":"What is the impedance of the Amphenol 925-201J-51S?","answer":"The 925-201J-51S is a 50 Ohm SMPM jack, rated DC to 40 GHz."},{"question":"Does the 925-201J-51S have a snap-on or threaded fastening?","answer":"The fastening type is snap-on — the connector locks with a positive click when fully mated. The mounting to the panel uses a threaded body with a hex nut."},{"question":"Can the 925-201J-51S be replaced by a different part number?","answer":"The 925-138J-51P is a functional peer with a full detent and 500 mating cycles, but it is a different part — confirm the BOM position before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/925-201J-51S","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/925-201J-51S 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}}