Image is for illustrative purposes only. Please refer to product description.
- Manufacturer
- Siemens
- Manufacturer part number
- 6ES7953-8LJ31-0AA0
- Product family
- SIMATIC S7-300 PLC Modules
- Category
- PLCs and I/O › Memory and backup modules
- Technical datasheet
- Data sheet
Specifications
| Attribute | Value |
|---|---|
| Type | Memory card |
| Manufacturer lifecycle | Phased out |
| Product type designation | Micro Memory Card |
| Storage / Type of memory | Flash-EPROM |
| Storage / Memory size | 512 kbyte |
| Storage / Number of write/delete operations, min. | 100 000 |
| Storage / Data retention (after final programming action), min. | 10 a |
| Width | 24 mm |
| Height | 32 mm |
| Depth | 1.4 mm |
| Weight, approx. | 2 g |
| Phase-out announced (PM400) | 1 October 2023 |
| Product cancellation (PM410) | Not set yet |
Description
The Siemens 6ES7953-8LJ31-0AA0 is the 512 KB Micro Memory Card (MMC), the load memory that S7-300 CPUs with MMC slots need to run. Siemens's data sheet gives flash memory, at least 100,000 write/delete operations and data retention of at least 10 years after the last programming. SiePortal lists it as phase-out announced.
Application: Program memory for S7-300 CPUs
Used with: S7-300, C7 and ET 200 CPUs with an MMC slot
What is the 6ES7953-8LJ31-0AA0 used for?
It holds the CPU's program and configuration: an S7-300 CPU such as the 313C, 314C or 315-2 does not run without one. A failed or lost card stops the CPU.
Key features
- 512 KB flash load memory
- At least 100,000 write/delete operations
- Data retained at least 10 years after the last programming
- For S7-300, C7 and ET 200 CPUs
- Siemens has announced its phase-out
Documents and Resources
Associated Products
| Image | Product | Description | Stock | View | Add to RFQ |
|---|---|---|---|---|---|
 | 6ES7321-1BH02-0AA0Siemens | SM 321 digital input, 16 DI, 24 V DC | In stock | View | |
 | 6ES7322-1BH01-0AA0Siemens | SM 322 digital output, 16 DO, 24 V DC, 0.5 A | In stock | View | |
 | 6ES7322-1HH01-0AA0Siemens | SM 322 relay output, 16 DO, relay contacts | In stock | View | |
 | 6ES7323-1BL00-0AA0Siemens | SM 323 digital I/O, 16 DI and 16 DO, 24 V DC | In stock | View | |
 | 6ES7392-1AM00-0AA0Siemens | Front connector, 40-pole, screw terminals | In stock | View | |
 | 6ES7392-1AJ00-0AA0Siemens | Front connector, 20-pole, screw terminals | In stock | View | |
 | 6ES7953-8LL31-0AA0Siemens | Micro Memory Card 2 MB for S7-300 | In stock | View | |
 | 6ES7312-1AE14-0AB0Siemens | CPU 312, 32 KB, MPI | In stock | View | |
 | 6ES7314-1AG14-0AB0Siemens | CPU 314, 128 KB, MPI | In stock | View | |
 | 6ES7313-6CG04-0AB0Siemens | CPU 313C-2 DP compact CPU, 16 DI/16 DO, MPI and PROFIBUS DP | In stock | View | |
 | 6ES7314-6CH04-0AB0Siemens | CPU 314C-2 DP compact CPU with integrated I/O, MPI and PROFIBUS DP | In stock | View | |
 | 6ES7317-2AK14-0AB0Siemens | CPU 317-2 DP, 1 MB, MPI/DP and PROFIBUS DP | In stock | View |
Product Questions
Is the 6ES7953-8LJ31-0AA0 discontinued?
Yes. Its manufacturer lifecycle status is Phased out.
Can another Siemens SIMATIC S7-300 part replace it?
Potential replacements must be checked against the required ratings, dimensions and connections. Sharing a family name does not establish interchangeability.
Do you ship worldwide?
Yes. TimControls ships worldwide. Parts usually ship within 3 to 7 working days of order confirmation, and the exact lead time and shipping options are stated on your quote. Include your delivery country and postal code when you ask for a quote.
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