{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7953-8LM00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7953-8LM00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7953-8LM00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7953-8LM00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7 Micro Memory Card, 6ES7953-8LM00-0AA0, 4 Mbyte Flash-EPROM for S7-300/C7/ET 200S IM151 CPUs, 3.3 V Nflash.","salesMarkdown":"The Siemens 6ES7953-8LM00-0AA0 is a SIMATIC S7 Micro Memory Card — a Flash-EPROM storage module sized at 4 Mbyte for the S7-300, C7, and ET 200S IM151 CPU families. It operates at 3.3 V Nflash and serves as the program and data retention medium for those controllers. ## What the 4 Mbyte rating means for your BOM 4 Mbyte is the storage capacity for the user program, configuration data, and recipe blocks. For a typical S7-300 application — say a medium-sized conveyor line or packaging cell with a few hundred I/O points and some PID loops — 4 Mbyte gives comfortable headroom. If your project requires extensive data logging, HMI image storage, or large recipe arrays, you may need to step up to the 8 Mbyte card (6ES7953-8LP00-0AA0). The Flash-EPROM type means the card retains data without battery backup and can be rewritten in the field via the CPU's programming port.","metaTitle":"Siemens 6ES7953-8LM00-0AA0 SIMATIC S7 Micro Memory Card, 4 M","metaDescription":"Siemens 6ES7953-8LM00-0AA0 SIMATIC S7 Micro Memory Card for S7-300/C7/ET 200S IM151 CPUs. 4 Mbyte Flash-EPROM, 3.3 V Nflash. Mature lifecycle, sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Accessories"],"specifications":{"Memory size":"4 Mbyte","Type of memory":"Flash-EPROM","Weight, approx.":"50 g","lifecycle_stage":"mature","Belongs To Product":"S7-300/C7/ET 200S IM151 CPU"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$192.02","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=40693&mlfb=6ES7953-8LM00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7953-8LM00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the memory size and type?","answer":"4 Mbyte of Flash-EPROM memory. Flash-EPROM retains data without battery backup and supports in-field rewriting via the CPU programming port."},{"question":"What compliance documentation does Siemens provide for this card?","answer":"As a standard SIMATIC product, this card carries CE marking and is manufactured under Siemens' ISO 9001 quality system. Specific compliance declarations (RoHS, REACH, UL) are available through Siemens' industry online support portal using the order code 6ES7953-8LM00-0AA0."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7953-8LM00-0AA0","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/6ES7953-8LM00-0AA0 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}}