6ES7951-1KK00-0AA0 SIEMENS SIMATIC PLC

The Siemens 6ES7951-1KK00-0AA0 is a SIMATIC S7 memory card designed for the S7-300 series of programmable logic controllers. It uses 5V Flash EPROM technology with a capacity of 1 MB, providing non-volatile storage for user programs and configuration data in the compact "short design" form factor. This memory card serves as external load memory for S7-300 CPUs, allowing the user program to be stored independently of the CPU's internal RAM. The Flash EPROM technology retains data without requiring a backup battery, making it suitable for applications where program integrity must be maintained through power cycles.