0418A4ACLAA-4H

Overview

The IBM 0418A4ACLAA-4H is a static random-access memory (SRAM) integrated circuit with a capacity of 4 Mbit. It utilizes HSTL interface technology and features an access time of 4.5 ns. The device operates within a supply voltage range of 3.135V to 3.465V and supports an operating temperature range of 0°C to 85°C (TA). It is housed in a 119-ball BGA package measuring 22x14 mm, designed for surface-mount assembly.

Feature Summary

• High-speed SRAM architecture optimized for server applications
• HSTL compatible memory interface for reliable data transmission
• Compact 119-ball BGA packaging for dense board layouts

Applications

• IBM Power AIX server systems
• Enterprise storage controllers
• High-performance computing memory modules

Procurement Notes

Verify the manufacturer part number against official IBM documentation to ensure authenticity. Confirm that the component matches the specified 119-BGA package dimensions and electrical characteristics. Check for any specific ordering suffixes or revisions that may affect compatibility with existing system designs. Ensure compliance with RoHS standards as indicated by distributor listings.

Selection Notes

Select this component when integrating with IBM Power infrastructure requiring 4 Mbit SRAM buffers. Ensure the design accommodates the 3.135V to 3.465V supply requirement and 0°C to 85°C thermal environment. Verify PCB layout constraints for the 22x14 mm BGA footprint and HSTL signal integrity requirements before finalizing the bill of materials.

Part Context

This SRAM chip is part of IBM's proprietary memory component lineup, often associated with their Power Systems and AIX-based enterprise servers. It serves as high-speed buffer memory within complex server architectures, supporting the operational demands of mission-critical computing environments managed by IBM's hardware ecosystem.

Replacement Considerations

No public substitute part numbers are confirmed for this specific IBM component. Cross-referencing with generic SRAM equivalents requires careful validation of pinout, voltage levels, and interface protocols to ensure functional compatibility in existing IBM server designs.