{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7954-8LF03-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7954-8LF03-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7954-8LF03-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7954-8LF03-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7 memory card, 6ES7954-8LF03-0AA0, 24 Mbyte Flash-EPROM, 3.3 V, for S7-1X00 CPU and SINAMICS drives.","salesMarkdown":"The Siemens 6ES7954-8LF03-0AA0 is a SIMATIC S7 memory card built for the S7-1X00 CPU family and SINAMICS drive controllers. It stores 24 Mbyte of program and configuration data on Flash-EPROM, running at 3.3 V. This is the card you slot into the CPU to hold the application code and parameter sets — not a RAM card, so the data stays put without battery backup. ## What the endurance rating means for your line Rated for a minimum of 500 000 write/delete operations, this card handles frequent recipe changes or firmware updates without wearing out early. Data retention is guaranteed for 10 years if the total write/delete count stays under 50 000; above that threshold, retention drops to 1 year. For a conveyor line that gets a new sortation program once a quarter, you are well inside the safe zone. For a drive that logs parameters every cycle, you want to keep an eye on the cumulative write count.","metaTitle":"Siemens 6ES7954-8LF03-0AA0 SIMATIC S7 Memory Card, 24 Mbyte","metaDescription":"Siemens 6ES7954-8LF03-0AA0 SIMATIC S7 memory card, 24 Mbyte Flash-EPROM for S7-1X00 CPU/SINAMICS. Active production. Rated for 500k write/delete cycles. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC Accessories"],"specifications":{"Depth":"2.1 mm","Flash":"Yes","Width":"24 mm","title":"6ES7954-8LF03-0AA0","Height":"32 mm","Memory size":"24 Mbyte","description":"SIMATIC S7, MEMORY CARD FOR S7-1X00 CPU/SINAMICS, 3,3 V FLASH, 24 MBYTE","Type of memory":"Flash-EPROM","Weight, approx.":"3 g","lifecycle_stage":"mature","Number of write/delete operations, min.":"500 000","Data retention (after final programming action), min.":"10 a; If the delete/write processes < 50 000 (1 a if the delete/write processes > 450 000)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$293.00 – $546.80","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/032889da3dfd478b0caf2d8988432202.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1042964&mlfb=6ES7954-8LF03-0AA0"},"ai":{"faq":[{"question":"What is the memory size and type?","answer":"24 Mbyte of Flash-EPROM memory. It retains data without battery backup."},{"question":"What is the write endurance?","answer":"Minimum 500 000 write/delete operations. Data retention is 10 years if writes stay under 50 000, and 1 year above that threshold."},{"question":"Will 6ES7954-8LF03-0AA0 drop into a panel that was specified around 3RT1015-1BB42?","answer":"No — 3RT1015-1BB42 is a SIRIUS power contactor, a completely different class of device. The memory card fits only the memory slot of an S7-1X00 CPU or SINAMICS control unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7954-8LF03-0AA0","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/6ES7954-8LF03-0AA0 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}}