041841QLAD-4

Overview

The IBM 041841QLAD-4 is a Static Random Access Memory (SRAM) integrated circuit with a total capacity of 4 Mbit. It utilizes an HSTL memory interface standard for data transmission. The device is organized as 256K words by 18 bits, providing wide data bus capability suitable for high-performance computing applications. It is housed in a 119-ball Ball Grid Array (BGA) package with dimensions of 17x7 mm, designed for surface mount technology to facilitate automated PCB assembly and compact system integration.

Feature Summary

• High-density 4 Mbit SRAM architecture optimized for rapid data access
• HSTL interface compatibility ensuring signal integrity in high-speed systems
• Wide 18-bit data organization supporting complex processing requirements
• Compact 119-BGA surface mount packaging for efficient board space utilization

Applications

• High-performance server memory subsystems
• Network infrastructure equipment requiring fast cache memory
• Industrial control systems with strict timing constraints
• Telecommunications base station processing units

Procurement Notes

Verify the specific suffix designation against official IBM documentation to confirm exact speed grades and temperature ranges. Ensure that the BGA footprint matches your PCB design guidelines precisely. Confirm RoHS compliance status through the manufacturer's current certification documents rather than relying on distributor summaries. Validate supply chain authenticity through authorized channels to prevent counterfeit components.

Selection Notes

Select this component when an 18-bit wide data path is required alongside 4 Mbit capacity. The HSTL interface dictates compatibility with specific host controllers supporting this standard. Consider the 119-BGA package constraints during mechanical design. Evaluate thermal dissipation requirements associated with the BGA form factor in enclosed environments.

Part Context

This part belongs to IBM's legacy enterprise memory portfolio, specifically designed for mission-critical applications where reliability and speed are paramount. The 041841 series typically serves as cache or buffer memory in mainframe and server architectures. Its specific configuration distinguishes it from narrower 8-bit or 16-bit variants within the same family.

Replacement Considerations

Direct substitutes must match the 4Mbit capacity, 18-bit width, HSTL interface, and 119-BGA package. Verify pin-to-pin compatibility if considering alternative manufacturers. Cross-reference speed grades to ensure equal or superior performance metrics.