{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMP-FS2A-1259","brand":"Amphenol","brandSlug":"amphenol","productSlug":"SMP-FS2A-1259","canonicalUrl":"https://icsourcedirect.com/amphenol/SMP-FS2A-1259","factsUrl":"https://icsourcedirect.com/api/mcp/products/SMP-FS2A-1259","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol SMP series, SMP to SMP adapter, SMP-FS2A-1259, straight, plug to plug, female to female, 50 Ohm, 40 GHz max, gold body, free hanging.","salesMarkdown":"## Straight SMP In-Line Adapter, 50 Ohm to 40 GHz The Amphenol SMP-FS2A-1259 is a straight, in-line SMP to SMP adapter — plug on both ends, female centre contacts on both sides. It is a same-series conversion adapter, meaning it joins two SMP male cable ends or panel jacks without changing the interface. Rated for 50 Ohm systems, it holds a 40 GHz maximum frequency, making it suitable for high-speed digital or microwave signal paths up through Ka-band. The snap-on fastening on both ends gives a quick, positive mate that releases with a straight pull — no coupling nut to turn. With 100 mating cycles, it is built for test setups, break-out boxes, or semi-permanent interconnects where the adapter stays in place for a series of connections. ## 40 GHz Bandwidth and 50 Ohm Impedance The 40 GHz frequency ceiling means this adapter passes signals from DC through the full microwave range without a resonant dip inside the passband. The 50 Ohm impedance matches the standard for RF test equipment, spectrum analysers, and most microwave cabling — no impedance step to cause a reflection. The PTFE dielectric keeps the dielectric constant stable across the temperature range, so the electrical length does not drift with ambient heat. ## 100 Mating Cycles and Snap-On Retention The 100-cycle rating is typical for an SMP snap-on interface — the spring fingers in the female contact wear with each mate, and the gold plating on both the body and centre contact resists corrosion through those cycles. The snap-on, snap-on fastening on both ends means each side locks with an audible click and releases with a firm axial pull. No tool is required for mating or unmating, which speeds up reconfiguration in a test harness. The free-hanging, in-line mounting lets the adapter float in the cable run without a panel cutout.","metaTitle":"Amphenol SMP-FS2A-1259 SMP to SMP Adapter, 50 Ohm, 40 GHz","metaDescription":"Amphenol SMP-FS2A-1259 straight SMP plug-to-plug adapter, female-to-female, 50 Ohm impedance, rated to 40 GHz. Gold-plated beryllium copper body.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Amphenol RF","Style":"Straight","Series":"-","Package":"Bag","Features":"-","Includes":"-","Impedance":"50Ohm","Body Finish":"Gold","Adapter Type":"Plug to Plug","Body Material":"Beryllium Copper","Center Gender":"Female to Female","Mating Cycles":"100","Mounting Type":"Free Hanging (In-Line)","Adapter Series":"SMP to SMP","Fastening Type":"Snap-On, Snap-On","Insertion Loss":"-","Product Status":"Active","Conversion Type":"Same Series","Frequency - Max":"40 GHz","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Base Product Number":"SMP-FS2A","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper","Convert To (Adapter End)":"SMP Plug, Female Socket","Convert From (Adapter End)":"SMP Plug, Female Socket"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.5100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/21f49fe4ea95f2bf26a95aa855f1f3c2.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/SMP-FS2A-1259/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy SMP-FS2A-1259?","answer":"Submit a request for current pricing and availability — confirmed at quote time."},{"question":"What is the impedance of SMP-FS2A-1259?","answer":"The adapter is rated for 50 Ohm systems, the standard impedance for RF and microwave test equipment."},{"question":"Is SMP-FS2A-1259 female to female?","answer":"Yes — both adapter ends are SMP plug, female socket, making it a female-to-female in-line adapter."},{"question":"What is the mating cycle life of SMP-FS2A-1259?","answer":"Rated for 100 mating cycles. The gold-plated centre contacts and gold body finish resist wear through those cycles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/SMP-FS2A-1259","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/SMP-FS2A-1259 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}}