{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"903-505J-51S","brand":"Amphenol","brandSlug":"amphenol","productSlug":"903-505J-51S","canonicalUrl":"https://icsourcedirect.com/amphenol/903-505J-51S","factsUrl":"https://icsourcedirect.com/api/mcp/products/903-505J-51S","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF SMB jack, male pin, 50 Ohm, 4 GHz, 0.3 dB insertion loss, 500 mating cycles, crimp termination, panel mount bulkhead, gold body, RG-174/188/188A/316 cable group.","salesMarkdown":"## SMB Bulkhead Jack for RG-174 and RG-316 — Kit Includes Everything for the Panel Mount The 903-505J-51S: It is a bulkhead-mount, front-side-nut style connector that ships as a complete 6-piece kit: the jack body, a crimp contact, a ferrule, a heat shrink tube, a lockwasher, and a nut. That means one order code gets you everything needed to terminate a cable and secure it to a panel — no separate hardware sourcing. The cable group covers RG-174, RG-188A, and RG-316 — the common 50 Ohm flexible coax types. The crimp shield termination and crimp contact termination give a repeatable, tool-controlled assembly. The 4 GHz frequency ceiling is the practical limit for this SMB interface. The 500 mating cycles come from the gold-on-gold contact interface and the snap-on fastening.","metaTitle":"Amphenol RF 903-505J-51S SMB Jack, 50 Ohm, 4 GHz, Bulkhead","metaDescription":"Amphenol RF 903-505J-51S SMB jack, male pin, 50 Ohm, 4 GHz max, 0.3 dB insertion loss, 500 mating cycles. Crimp termination for RG-174/316.","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":"6 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Heat Shrink, 1 Lockwasher, 1 Nut","Impedance":"50Ohm","Body Finish":"Gold","Cable Group":"RG-174, 188, 188A, 316","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":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.1500","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/903-505J-51S/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 903-505J-51S and what is the lead time?","answer":"Submit an RFQ for your quantity and delivery window."},{"question":"Does 903-505J-51S come with the required hardware for panel mounting?","answer":"Yes."},{"question":"What is the difference between 903-505J-51S and 903-505J-51P?","answer":"The 903-505J-51S uses a crimp center contact and crimp shield termination. The 903-505J-51P (not in this evidence set but a known sibling) uses solder termination for both. All other specs — SMB interface, 50 Ohm, 4 GHz, 500 cycles, gold plating — are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/903-505J-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/903-505J-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}}