{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1991-1AF00-7AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1991-1AF00-7AA0","canonicalUrl":"https://aoctrl.com/siemens/6AG1991-1AF00-7AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1991-1AF00-7AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS NET SCALANCE X SFP991-1LD, 1x 100 Mbps LC port, single-mode, 1310 nm, conformal coated, -40…+85 °C, IP20, active production.","salesMarkdown":"The Siemens 6AG1991-1AF00-7AA0 is a SIPLUS NET SCALANCE X SFP991-1LD SFP module. It gives a SCALANCE X managed switch a single 100 Mbps LC port on single-mode fiber at 1310 nm, supporting links up to 26 km. Built on the standard 6GK5991-1AF00-8AA0 with conformal coating, this version is rated for continuous operation from -40 °C to +85 °C — though the spec allows +85 °C for a maximum of 16 hours, with the rest of the range being continuous. MTBF is listed at 490 years, a reliability figure appropriate for the extended-temperature industrial network segment. Dimensions are 14 mm wide, 57 mm deep, 9 mm high — it latches into a standard SFP cage. Protection class is IP20. ## Optical and EMC specifications The LC port uses a single-mode optical interface at 1310 nm, with transmitter output rated -8 dB maximum and -15 dB minimum, and receiver input maximum -8 dB. The module can span up to 26 km. CE marked. Emitted interference conforms to EN 61000-6-4:2007 Class A; immunity per EN 61000-6-2:2005. Temperature range during storage and transport is the same -40 to +85 °C as operation.","metaTitle":"Siemens 6AG1991-1AF00-7AA0 SIPLUS SFP Module, SM LC 100Mbps","metaDescription":"Active SIPLUS SCALANCE X SFP991-1LD SFP module. Single-mode LC, 1310nm, 100Mbps, up to 26 km. MTBF 490 years, -40°C to +85°C, conformal coated. CE, EN 61000-6-4/6-2.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"MTBF":"490 a","Note":"A maximum operating temperature of +85 °C is permissible for a duration of 16 hours","Depth":"57 mm","Width":"14 mm","title":"6AG1991-1AF00-7AA0","Design":"SFP Module","Height":"9 mm","CE marking":"Yes","description":"SIPLUS NET SCALANCE X SFP991-1LD based on 6GK5991-1AF00-8AA0 with conformal coating, -40…+85 °C, SCALANCE X accessory; SFP991-1LD; 1x 100 Mbps LC port, optical; single-mode optical up to max. 26 km","During Storage":"-40 ... +85 °C","lifecycle_stage":"current","During Operation":"-40 ... +85 °C","During Transport":"-40 ... +85 °C","Fastening Method":"latched","protection class IP":"IP20","For Emitted Interference":"EN 61000-6-4:2007 (Class A)","For Interference Immunity":"EN 61000-6-2:2005","number of 100 Mbit/s LC ports":"1","Of The Receiver Input / Maximum":"-8 dB","Of The Transmitter Output / Maximum":"-8 dB","Of The Transmitter Output / Minimum":"-15 dB","Wavelength / Of The Optical Interface":"1310 nm; Single-mode","Design Of The Optical Interface / For Network Components Or Terminal Equipment":"LC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/35da205f0fa96bf932adeb864783f7c9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1421939&mlfb=6AG1991-1AF00-7AA0"},"ai":{"faq":[{"question":"What is the MTBF of this SFP module?","answer":"MTBF is 490 years."},{"question":"What is the maximum operating temperature and any time limitation?","answer":"The module operates from -40 °C to +85 °C. A maximum of +85 °C is permissible for a duration of 16 hours; the rest of the range is continuous."},{"question":"What compliance documentation does this module carry?","answer":"CE marking is present. EMC: emitted interference per EN 61000-6-4:2007 Class A; immunity per EN 61000-6-2:2005."},{"question":"Can this module replace the 6AG1242-5DX30-2XE0 in a panel?","answer":"No. The 6AG1242-5DX30-2XE0 is a PROFIBUS DP module with completely different function, form factor, and interface. The 6AG1991-1AF00-7AA0 is an SFP module for SCALANCE X switches only."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1991-1AF00-7AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6AG1991-1AF00-7AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}