{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7954-8LT02-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7954-8LT02-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7954-8LT02-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7954-8LT02-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7, spare-part memory card for S7-1x00 CPU, 3V Flash-EPROM, 32 Gbyte, 24 x 32 x 2.1 mm.","salesMarkdown":"The Siemens 6ES7954-8LT02-0AA0 is a spare-part SIMATIC S7 memory card designed for S7-1x00 CPUs. It provides 32 Gbyte of Flash-EPROM storage, which is the program and data load memory for the controller — not a removable USB-style drive. The 3V Flash technology means the card retains its content without a backup battery, and the 50 000 minimum write/delete cycles cover the typical program-update cadence over the life of a production line. This part is at a mature lifecycle stage and is designated as a spare part for replacement and service support. Procurement requires a quoted-to-order RFQ against the specific order code. ## Data retention and endurance The card guarantees a minimum data retention of 10 years after the final programming action, provided the cumulative write/delete count stays under 5 000 cycles. If the write/delete count exceeds 45 000 cycles, retention drops to 1 year. For a typical PLC program that is updated a few times per year, the 50 000-cycle endurance rating is effectively a lifetime supply — the retention limit, not the cycle count, is the practical constraint for long-term archival of the production image.","metaTitle":"Siemens 6ES7954-8LT02-0AA0 S7 Memory Card, 32 GB Flash-EPROM","metaDescription":"Siemens SIMATIC S7 spare-part memory card, 32 Gbyte Flash-EPROM for S7-1x00 CPUs. Mature lifecycle stage; sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Accessories"],"specifications":{"Depth":"2.1 mm","Flash":"Yes","Width":"24 mm","Height":"32 mm","Memory size":"32 Gbyte","Type of memory":"Flash-EPROM","Weight, approx.":"3 g","lifecycle_stage":"mature","Number of write/delete operations, min.":"50 000","Data retention (after final programming action), min.":"10 a; If the delete/write processes < 5 000 (1 a if the delete/write processes > 45 000)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=403298&mlfb=6ES7954-8LT02-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7954-8LT02-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the memory capacity and type?","answer":"It provides 32 Gbyte of Flash-EPROM memory, which serves as the load memory for S7-1x00 CPUs. The Flash type means no battery backup is needed for data retention."},{"question":"What are the physical dimensions?","answer":"The card is 24 mm wide, 32 mm high, and 2.1 mm deep. It weighs approximately 3 g."},{"question":"How many write/delete cycles does it support?","answer":"The minimum rated endurance is 50 000 write/delete cycles. Data retention is 10 years if the cycle count stays under 5 000, and drops to 1 year if the count exceeds 45 000 cycles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7954-8LT02-0AA0","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/6ES7954-8LT02-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}