{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"903-NM415J-51P","brand":"Amphenol","brandSlug":"amphenol","productSlug":"903-NM415J-51P","canonicalUrl":"https://icsourcedirect.com/amphenol/903-NM415J-51P","factsUrl":"https://icsourcedirect.com/api/mcp/products/903-NM415J-51P","rawCanonicalId":null},"summary":{"shortDescription":"SMB jack, male pin, 50 Ohm, 4 GHz, snap-on, through-hole solder, gold-over-beryllium copper, non-magnetic, bulk.","salesMarkdown":"The 903-NM415J-51P: It belongs to the 903NM series, distinguished by the non-magnetic beryllium copper body and centre contact — a deliberate choice for environments where magnetic materials are excluded, such as MRI suites, particle accelerators, or sensitive instrumentation racks. ## Why the Non-Magnetic Build Matters The standard sibling, 903-415J-51P, uses a brass body and brass centre contact — fine for general-purpose RF work, but brass carries enough magnetic susceptibility to distort fields in a 3T MRI bore or a Hall-effect sensor array. The 903-NM415J-51P swaps in beryllium copper for both the body and the centre contact, dropping the magnetic signature below the threshold that would perturb a sensitive measurement. Everything else — the SMB interface, snap-on fastening, 50 Ohm impedance, 4 GHz ceiling, 0.3 dB insertion loss, and 500 mating cycles — stays identical, so it drops into the same PCB footprint and mates with the same SMB cable plug.","metaTitle":"903-NM415J-51P SMB Jack, Non-Magnetic, 50 Ohm, 4 GHz","metaDescription":"903-NM415J-51P SMB jack, male pin, 50 Ohm, 4 GHz max, 0.3 dB insertion loss. Non-magnetic beryllium copper body.","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":"Non-Magnetic","Includes":"-","Impedance":"50 Ohms","Body Finish":"Gold","Cable Group":"-","Body Material":"Beryllium Copper","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Through Hole","Connector Type":"Jack, 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":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"903NM","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":"$8.6300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/7b40e639810b8b9bad5b93e45b9d9271.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/903-NM415J-51P/alternatives.json"},"ai":{"faq":[{"question":"Will 903-NM415J-51P drop into a panel that was specified around 903-415J-51P without rewiring?","answer":"Yes — the two share the same SMB interface, snap-on fastening, through-hole footprint, and 50 Ohm impedance. The only difference is the body and centre contact material: beryllium copper here versus brass on the standard version. No board layout or cable assembly change is needed."},{"question":"What compliance documentation does this brand provide for 903-NM415J-51P?","answer":"The listing confirms RoHS compliance and the part carries the 903NM base product number. For specific REACH, UL, or IEC declarations, the manufacturer's documentation is available on request through the RFQ process."},{"question":"Where can I buy 903-NM415J-51P?","answer":"This part is active and quoted to order against your BOM quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/903-NM415J-51P","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-NM415J-51P 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}}