{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"903-505J-51S1","brand":"Amphenol","brandSlug":"amphenol","productSlug":"903-505J-51S1","canonicalUrl":"https://icsourcedirect.com/amphenol/903-505J-51S1","factsUrl":"https://icsourcedirect.com/api/mcp/products/903-505J-51S1","rawCanonicalId":null},"summary":{"shortDescription":"SMB jack, male pin, 50 Ohms, 4 GHz, 500 mating cycles, panel mount bulkhead, crimp shield, solder contact, gold body, includes 6-piece kit.","salesMarkdown":"## Cable Termination and Shield The 903-505J-51S1: Shield termination is crimp-style, which gives a reliable 360° ground connection to the cable braid. The centre contact is soldered. The specified cable groups are RG-179, RG-188, RG-316 Double Braid, and M17/152-RD316 — all 50 Ohm coax types with similar dielectric diameters. The supplied ferrule and heat shrink complete the termination; the heat shrink seals the cable entry against moisture and strain. ## Materials and Environment The body and centre contact are brass with gold plating. That wide range suits outdoor or engine-compartment environments where the connector sees thermal cycling.","metaTitle":"903-505J-51S1 SMB Jack, 50 Ohm, 4 GHz, Bulkhead Kit","metaDescription":"903-505J-51S1 SMB jack, male pin, 50 Ohm impedance, 4 GHz max frequency, 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":"6 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Heat Shrink, 1 Lockwasher, 1 Nut","Impedance":"50 Ohms","Body Finish":"Gold","Cable Group":"RG-179, 188, 316 Double Braid, M17/152-RD316","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Panel Mount","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":"Bulkhead - Front Side Nut","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"903-505J","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C ~ 165°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.8400","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/903-505J-51S1/alternatives.json"},"ai":{"faq":[{"question":"What is the mating cycle rating for the 903-505J-51S1?","answer":"The gold-on-gold contact interface supports repeated connect/disconnect without significant wear, which is typical for SMB snap-on connectors used in test or field-service applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/903-505J-51S1","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/903-505J-51S1 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}}