Fanuc A20B-2900-0142/05A Memory RAM Card

Fanuc A20B-2900-0142/05A is a RAM memory module circuit board used in Fanuc CNC control systems. It provides volatile program and data storage, enabling machine tool controllers to handle larger part programs, system parameters, and temporary runtime data. This module is a genuine Fanuc spare part designed for high reliability in industrial automation environments. Technical Specifications: Model: A20B-2900-0142/05A Manufacturer: Fanuc Corporation Type: CNC RAM module circuit board Function: Stores CNC programs, parameters, offset data, and runtime system information Memory Technology: Static RAM (SRAM) with battery backup for data retention Capacity: Typically 128 KB to 512 KB (varies by configuration and paired ICs) Form Factor: Proprietary Fanuc PCB with edge connector Connector: Gold-plated edge contacts for secure installation Compatibility: Fanuc 0i, 10/11, 15, and other CNC systems depending on configuration Operating Temperature: 0°C to 55°C (CNC cabinet standard) Mounting: Plug-in slot installation on CNC control mainboard PCB Details: Multi-layer board with ICs and backup battery interface Dimensions: Approx. 4–5 in length x 1.5 in width Country of Manufacture: Japan Please review pictures carefully and let us know if you have any questions!