Siemens 2 MB Flash-EPROM Micro Memory Card for SIMATIC PLC 6ES7953-8LL31-0AA0

Siemens 2 MB Flash-EPROM Micro Memory Card for SIMATIC PLC 6ES7953-8LL31-0AA0

Product Identification

• Manufacturer: Siemens

• Siemens Order Number (MLFB): 6ES7953-8LL31-0AA0

• Product Type: Micro Memory Card for SIMATIC automation systems (S7-300, C7, ET 200)

Memory Characteristics

• Memory Type: Flash-EPROM (Nflash)

• Memory Size: 2 Mbyte

• Minimum Write/Delete Cycles: 100,000

• Data Retention (after final programming): ≥ 10 years

Electrical / Operating Data

• Supply Voltage: 3.3 V nominal (Nflash)

Mechanical Specifications

• Width: 24 mm

• Height: 32 mm

• Depth (Thickness): 1.4 mm

• Weight: Approx. 2 g

Compatibility / Application

• Designed for SIMATIC S7-300, C7, and ET 200 automation systems as a micro memory card for program and data storage.

Lifecycle / Compliance

• May be subject to product lifecycle status (phase-out/availability varies by region).

Certifications & Approvals

• Manufacturer declaration of conformity and general approvals (e.g., EMV as applicable).

Standards / Classification Codes

• Standard industrial classification formats (eClass, ETIM, UNSPSC) assigned for cataloging and procurement.

Summary Description
The Siemens 6ES7953-8LL31-0AA0 is a 2 MB Flash-EPROM micro memory card used for storing programs and data in Siemens SIMATIC PLC automation systems (S7-300, C7, ET 200). It operates at 3.3 V, supports at least 100,000 write/delete cycles, and retains data for at least 10 years after programming. Its compact form factor and industrial memory technology make it suitable for reliable long-term use in control and automation environments. 

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