{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0731000258","brand":"Molex","brandSlug":"molex","productSlug":"0731000258","canonicalUrl":"https://icsourcedirect.com/molex/0731000258","factsUrl":"https://icsourcedirect.com/api/mcp/products/0731000258","rawCanonicalId":null},"summary":{"shortDescription":"Molex Series 73100 SMB receptacle, male pin, 75 Ohm, through-hole, solder termination, gold body, 1 port, 4 GHz max frequency, 335 V, 500 mating cycles, Bulk.","salesMarkdown":"The Molex 0731000258 is a 75 Ohm SMB receptacle with a male pin contact, part of the Series 73100 coaxial connector family. The gold-plated brass body and center contact, combined with a PTFE dielectric, deliver consistent 75 Ohm impedance up to 4 GHz with a typical insertion loss of 0.2 dB. The snap-on fastening provides quick connect/disconnect, rated for 500 mating cycles — suitable for test equipment, video distribution, or telecom infrastructure where repeated access is needed. The 75 Ohm impedance sets this SMB receptacle apart from the more common 50 Ohm SMB variants. At 4 GHz bandwidth and 335 V rating, it covers baseband video, CCTV, and low-power RF distribution where 75 Ohm characteristic impedance is the standard — think broadcast video routers or cable modem termination equipment. The 500-cycle mating life is high for a snap-on coaxial connector, reflecting the gold-on-gold contact interface that resists fretting corrosion over repeated matings.","metaTitle":"Molex 73100 0731000258 SMB Receptacle, 75 Ohm, 4 GHz","metaDescription":"Molex 0731000258 SMB receptacle, 75 Ohm, 4 GHz, 500 mating cycles, gold body. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Molex","Series":"73100","Features":"-","Includes":"-","Impedance":"75 Ohms","Packaging":"Bulk","Body Finish":"Gold","Cable Group":"-","Part Status":"Active","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Through Hole","Connector Type":"Receptacle, Male Pin","Fastening Type":"Snap-On","Insertion Loss":"0.2dB","Voltage Rating":"335 V","Connector Style":"SMB","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"073100","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-55°C ~ 155°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/5e6d6064bc5017d3b1accae0a5f0d262.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the impedance of Molex 0731000258?","answer":"The 0731000258 is a 75 Ohm SMB receptacle, designed for 75 Ohm characteristic impedance systems such as video and telecom."},{"question":"What is the mating cycle rating of 0731000258?","answer":"The 0731000258 is rated for 500 mating cycles, thanks to the gold-plated center contact and body finish that resist wear and corrosion."},{"question":"Is 0731000258 equivalent to other BNC receptacles?","answer":"No — this is an SMB (SubMiniature version B) connector, not a BNC. SMB uses a snap-on coupling and is smaller than BNC; the two are not mechanically interchangeable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/0731000258","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/molex/0731000258 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}