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      Siemens 6ES7953-8LG20-0AA0
      Siemens 6ES7953-8LG20-0AA0
      Siemens 6ES7953-8LG20-0AA0
      Siemens 6ES7953-8LG20-0AA0
      Siemens 6ES7953-8LG20-0AA0
      Siemens 6ES7953-8LG20-0AA0

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      In Stock
      Micro Memory Card

      6ES7953-8LG20-0AA0

      Spare Part Number

      PN6ES7953-8LG20-0AA0

      Product Information:

      SIMATIC S7, Micro Memory

      Card for S7-300/C7/ET

      200, 3, 3V Nflash, 128 KB

      industrial automation system

      Product image is representative; revision or series may vary. Contact us to request a specific version.
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      Technical specifications for

      6ES7953-8LG20-0AA0

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        Siemens
      • Product Category:
        PLC and Machine Control
      • Spare Part Number:
        6ES7953-8LG20-0AA0
      • Estimated shipping dimensions:
        3.1x2.3x0.2cm
      • Weight:
        0.01 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        Germany
      • Place of shipment:
        Xiamen, Fujian, China
      • Product Type:
        Memory Card
      • Category Series:
        SIMATIC S7
      • Used Systems:
        for S7-300/C7/ET 200
      • Voltage Rating:
        3V Nflash
      • Memory Size:
        128 KB
      • The Type of memory:
        RAM MEMORY MOD
      • Series:
        Siemens Simatic S7
      • Stock Availability:
        20
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      Alternative Names

      6ES79538LG200AA0 6ES7953 8LG20 0AA0

      Manuals

      PRODUCT & ORDER FAQS

      Questions buyers ask about 6ES7953-8LG20-0AA0

      • What is the fundamental purpose of the 6ES7953-8LG20-0AA0 in SIMATIC S7-300 automation systems?

        The 6ES7953-8LG20-0AA0 is a Micro Memory Card (MMC) designed for secure program and data storage in SIMATIC S7-300, C7, and ET 200 series controllers. It stores the PLC program, configuration data, and parameter sets, enabling the controller to load and execute the automation logic at power-up or after a hardware swap.

      • What are the memory capacity and technology attributes of 6ES7953-8LG20-0AA0?

        The 6ES7953-8LG20-0AA0 incorporates 128 kB of NFlash non-volatile memory at an operating voltage of 3.3 V DC. The NFlash technology ensures persistent data retention even under loss of supply power, with a guaranteed endurance of approximately 100,000 write/delete cycles and a minimum data retention period of 10 years after programming.

      • How does 6ES7953-8LG20-0AA0 contribute to system reliability in harsh industrial environments?

        The 6ES7953-8LG20-0AA0 is engineered to withstand typical industrial environmental stressors. Its compact NFlash structure resists mechanical shock and electrical noise associated with PLC racks. The memory card’s robust design ensures sustained program integrity and minimizes loss of operational data in rugged plant deployments.

      • In what ways can 6ES7953-8LG20-0AA0 be used for configuration backup and system cloning?

        The 6ES7953-8LG20-0AA0 can be employed as a backup medium for PLC programs and configurations. It allows rapid cloning of automation setups by transferring the MMC between controllers, minimizing commissioning time and ensuring consistency across multiple machines or redundant installations.

      • What are the physical characteristics of 6ES7953-8LG20-0AA0 relevant to installation and storage?

        The 6ES7953-8LG20-0AA0 is a compact memory module measuring approximately 24 mm × 32 mm × 1.4 mm and weighing roughly 2 g, making it easy to insert into designated MMC slots on SIMATIC S7-300, C7, or ET200 CPU modules without significant footprint or weight impact.

      • Can the 6ES7953-8LG20-0AA0 be reformatted or repurposed by end users?

        No—6ES7953-8LG20-0AA0 MMC cards cannot be reformatted by conventional user operations. The memory architecture is fixed by Siemens for system compatibility; data can be overwritten with new programs or settings but not restructured in format. This ensures consistency and reduces risk of memory corruption.

      • What are the compatibility boundaries of 6ES7953-8LG20-0AA0 with SIMATIC controller families?

        The 6ES7953-8LG20-0AA0 is explicitly compatible with the SIMATIC S7-300, C7, and ET 200 PLC family memory interfaces. It is not architecturally compatible with newer platforms like S7-1200 or S7-1500, which use different memory and project storage paradigms.
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          Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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