0418A81QLAA-4

Overview

The IBM 0418A81QLAA-4 is a Static Random Access Memory (SRAM) integrated circuit with a total memory size of 8Mbit. The device features a memory organization of 512K words by 18 bits, providing the necessary data width for error correction applications. It utilizes a surface mount mounting type, facilitating integration into modern electronic assemblies.

Feature Summary

• High-density static random access memory architecture
• Integrated 18-bit word width supporting error correction
• Surface mount package design for automated assembly

Applications

• Enterprise server memory modules
• Storage system cache buffers
• IBM Z system components

Procurement Notes

Verify the complete part number including the suffix to ensure correct speed grade and temperature rating. Confirm that the surface mount footprint matches your PCB design requirements. Check for specific IBM ordering prefixes or suffixes that may indicate variant differences in electrical characteristics or packaging.

Selection Notes

Select this component when an 8Mbit SRAM with 18-bit width is required for high-reliability computing environments. Ensure compatibility with existing system bus speeds and voltage levels. Consider the surface mount form factor for space-constrained designs requiring robust memory solutions.

Part Context

This memory IC belongs to IBM's portfolio of high-performance storage components designed for enterprise infrastructure. It supports critical workloads in systems requiring fast data access and reliability, such as mainframe and advanced server architectures.

Replacement Considerations

Consult official IBM documentation for direct cross-reference part numbers. Verify pinout and electrical specifications before substituting with generic SRAMs to ensure system stability.