{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"903-406J-51R","brand":"Amphenol","brandSlug":"amphenol","productSlug":"903-406J-51R","canonicalUrl":"https://icsourcedirect.com/amphenol/903-406J-51R","factsUrl":"https://icsourcedirect.com/api/mcp/products/903-406J-51R","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF SMB receptacle, male pin, 50 Ohm, 4 GHz, 1 port, panel mount bulkhead, gold body, solder cup termination, 500 mating cycles, Bulk.","salesMarkdown":"The 903-406J-51R: It terminates via a solder cup — you tin the centre conductor and the shield braid, then solder each into its cup. The PTFE dielectric and gold-over-brass body keep the signal path stable from DC through 4 GHz, covering ISM bands, cellular, and GPS /L2 without a second thought. The 4 GHz maximum frequency is the usable top end before insertion loss climbs past 0.3 dB. The 500 mating cycles come from the gold-on-gold contact interface.","metaTitle":"Amphenol RF 903-406J-51R SMB Receptacle, 50 Ohm, 4 GHz, Bulk","metaDescription":"Amphenol RF 903-406J-51R SMB bulkhead receptacle, male pin, 50 Ohm, 4 GHz max, 500 mating cycles, gold body, solder cup termination.","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":"50Ohm","Body Finish":"Gold","Cable Group":"-","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Panel Mount","Connector Type":"Receptacle, Male Pin","Fastening Type":"Snap-On","Insertion Loss":"0.3dB","Product Status":"Active","Connector Style":"SMB","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"Bulkhead - Rear Side Nut","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"903-406J","Contact Termination":"Solder Cup","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.4200","stockQuantity":23,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/b3be4888c77bc54c213c0db8c0646b38.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the impedance of 903-406J-51R?","answer":"50 Ohm nominal, standard for SMB interfaces and common RF systems."},{"question":"How many mating cycles does 903-406J-51R have?","answer":"Rated for 500 mating cycles, supported by gold-on-gold contact plating."},{"question":"Where can I buy 903-406J-51R?","answer":"Sourced to order against your BOM quantity. Availability and pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/903-406J-51R","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/903-406J-51R 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}}