{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"903-375J-53P","brand":"Amphenol","brandSlug":"amphenol","productSlug":"903-375J-53P","canonicalUrl":"https://icsourcedirect.com/amphenol/903-375J-53P","factsUrl":"https://icsourcedirect.com/api/mcp/products/903-375J-53P","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF SMB receptacle, male pin, 50 Ohm, 4 GHz, bulkhead mount, solder termination, includes lockwasher and nut, gold center contact.","salesMarkdown":"## SMB Bulkhead Receptacle, 50 Ohm, DC–4 GHz The 903-375J-53P: SMB is a snap-on coupling RF connector family, smaller than BNC, commonly used for DC to 4 GHz signal paths in telecom base stations, test equipment, and instrumentation where quick connect-disconnect is needed without the thread of an SMA. The 4 GHz maximum frequency covers the full L-band and S-band, plus most IF and baseband signals used in cellular backhaul, GPS, and Wi-Fi front ends. It does not reach the 6 GHz of newer Wi-Fi 6E bands, so if your signal path runs above 4 GHz, this connector will introduce roll-off. For higher cycle life, look to an SMA with a threaded coupling. This receptacle mounts through a panel hole (bulkhead) and is secured from the front side with the supplied nut and lockwasher — no separate hardware order needed. The center contact terminates via solder cup (solder termination), and the shield is also solder-terminated. The snap-on fastening means the mating SMB plug pushes on and pulls off without a coupling nut — confirm your cable assembly uses a standard SMB male plug.","metaTitle":"Amphenol RF 903-375J-53P SMB Receptacle, 50 Ohm, 4 GHz","metaDescription":"Amphenol RF 903-375J-53P SMB receptacle, male pin, 50 Ohm impedance, 4 GHz max, bulkhead mount with lockwasher and nut included.","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":"3 pcs - 1 Connector, 1 Lockwasher, 1 Nut","Impedance":"50Ohm","Body Finish":"Nickel","Cable Group":"-","Body Material":"Brass","Housing Color":"Silver","Mating Cycles":"500","Mounting Type":"Panel Mount, Through Hole","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 - Front Side Nut","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"903-375J","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":"$13.8471","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/572ccce5318f1a6918a8da89d15fd867.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/903-375J-53P/alternatives.json"},"ai":{"faq":[{"question":"Is 903-375J-53P a male or female connector?","answer":"In RF connector terminology, a receptacle with a male pin mates with a female jack (which has a socket center contact)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/903-375J-53P","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/903-375J-53P 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}}