{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"903-420J-52P","brand":"Amphenol","brandSlug":"amphenol","productSlug":"903-420J-52P","canonicalUrl":"https://icsourcedirect.com/amphenol/903-420J-52P","factsUrl":"https://icsourcedirect.com/api/mcp/products/903-420J-52P","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF SMC jack, male pin, 50 Ohm, 4 GHz, through-hole solder, gold-plated brass body, 500 mating cycles, 0.3 dB insertion loss, PTFE dielectric.","salesMarkdown":"## SMC Jack, 50 Ohm, 4 GHz — Through-Hole RF Termination The 903-420J-52P: The threaded coupling gives a secure, vibration-resistant mate — the SMC interface is smaller than SMA but shares the same 50 Ohm impedance and 1/4-36 thread pattern, so it mates with standard SMC plugs. Insertion loss holds at 0.3 dB through the band, supported by the PTFE dielectric and gold-plated centre contact. The brass body carries a gold finish, and the contact is terminated by soldering through the PCB hole. The 4 GHz frequency ceiling is the upper limit where the connector maintains its specified VSWR and insertion loss; beyond that, the interface geometry starts to radiate. For designs operating below 4 GHz, the 0.3 dB insertion loss is tight enough that it won't eat into the link budget. The gold-on-gold contact interface (centre contact and body finish both gold) keeps the RF path clean and resists corrosion in humid or outdoor enclosures. ## Mating and Termination — Through-Hole Solder, Threaded Coupling The threaded fastening locks the mated pair; the PTFE dielectric handles -65°C to 165°C.","metaTitle":"Amphenol RF 903-420J-52P SMC Jack, 50 Ohm, 4 GHz","metaDescription":"Amphenol RF 903-420J-52P SMC jack, male pin, 50 Ohm impedance, 4 GHz max frequency, 0.3 dB insertion loss, 500 mating cycles, through-hole solder termination","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":"-","Impedance":"50Ohm","Body Finish":"Gold","Cable Group":"-","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Through Hole","Connector Type":"Jack, Male Pin","Fastening Type":"Threaded","Insertion Loss":"0.3dB","Product Status":"Active","Connector Style":"SMC","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"903-420J","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":"$4.4278","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/0868a700e9b8cb674e6bc5552d110d2d.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/903-420J-52P/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/903-420J-52P","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/903-420J-52P 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}}