The Siemens 6ES7951-0KD00-0AA0 is a spare-part memory card for the S7-300 family, carrying 16 kbyte of Flash-EPROM storage on a 5V interface in the short-design form factor. This is the program and parameter memory for S7-300 CPUs — without it, the controller has no executable logic. The Flash-EPROM type means the contents persist through a power cycle and can be rewritten in-circuit via the CPU's programming port, but expect a finite write-erase cycle count typical of NOR Flash cells.
Siemens 6ES7951-0KD00-0AA0 S7-300 Memory Card, 16 kbyte Flas
MPN6ES7951-0KD00-0AA0
Siemens SIMATIC S7-300 memory card, 16 kbyte Flash-EPROM, short design, spare part 6ES7951-0KD00-0AA0.
$53.72Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Memory size | 16 kbyte |
| Type of memory | Flash-EPROM |
| Weight, approx. | 41 g |
| Belongs to product | S7-300 |
Product details
Frequently asked questions
What is the memory size and type of this card?
16 kbyte of Flash-EPROM memory. The Flash-EPROM type is non-volatile and electrically erasable in-circuit via the S7-300 CPU's programming port, with a finite write-erase endurance typical of NOR Flash devices.
Will this card fit a panel originally built around a 6ES7136-6AB00-0CA1?
No — the 6ES7136-6AB00-0CA1 is an analog input module, not a memory card. The 6ES7951-0KD00-0AA0 is a memory card for the S7-300 CPU slot; it cannot substitute for or drop into a position occupied by an I/O module. The two parts serve entirely different functions in the panel.
How do I source this part?
Submit an RFQ. The mature lifecycle means stock is not guaranteed on the shelf, but the part is actively traded through the independent channel. A quote will confirm current availability and lead time.
MPN
6ES7951-0KD00-0AA0