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Siemens 6ES7951-0AG00-0AA0 — PLC Accessories

Siemens 6ES7951-0AG00-0AA0 S7-300 RAM Memory Card, 128 kbyte

MPN6ES7951-0AG00-0AA0

Siemens SIMATIC S7-300 spare part, RAM Memory Card, short design, 128 kbyte, 36 g.

$128.59Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

6ES7951-0AG00-0AA0 — Specifications
ParameterValue
Memory size128 kbyte
Type of memoryRAM
Weight, approx.36 g
Belongs to productS7-300

Product details

Memory card for S7-300 CPU program and data storage

The 6ES7951-0AG00-0AA0 is a spare-part RAM memory card for the Siemens S7-300 PLC family, providing 128 kbyte of volatile storage for user program blocks and data. Being RAM, the contents are lost when the CPU is powered down unless backed by a battery in the CPU module — a key distinction from Flash-based cards that retain data without power.

This part is classified at a mature lifecycle stage, meaning it is no longer in active volume production but remains available through the supply chain as a stocked spare.

Frequently asked questions

What is the memory size and type?

128 kbyte of RAM. Contents are volatile — lost on power-down unless the CPU has a functional backup battery.

What compliance documentation is available for this part?

As a Siemens SIMATIC spare part, it carries the standard CE marking for the European market. Specific RoHS, REACH, or UL documentation should be requested at time of RFQ, as the evidence does not list these certifications for this order code.

MPN
6ES7951-0AG00-0AA0