Original Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-TFBGA (6x8)
Alternative Part
SRAM - Asynchronous Memory IC 4Mbit Parallel 10 ns 48-CABGA (9x9)
SRAM - Asynchronous Memory IC 4Mbit Parallel 12 ns 48-CABGA (9x9)
1. 71V416L10BE Substitution Conclusion
From a core functionality perspective, the 71V416L10BE can serve as a replacement for the original part, but with two critical constraints. The differences lie in the operating voltage range and the package footprint: the Renesas part's voltage range of 3V to 3.6V is narrower than the ISSI part's 2.4V to 3.6V. If the original system's operating voltage was designed between 2.4V and 3V, this substitution will cause failure or reliability issues. Furthermore, although both are 48-ball BGAs, their package outlines differ (9x9 mm CABGA vs. 6x8 mm TFBGA). This necessitates a redesign of the PCB pad layout, as it cannot be directly soldered onto the original footprint. Provided the original system's supply voltage consistently remains above 3V and a PCB revision is permissible, this part is a functionally viable substitute, as its speed grade (10ns) and memory organization are identical.
2. 71V416L12BEGI Substitution Conclusion
The 71V416L12BEGI has lower feasibility as a direct replacement, primarily due to performance degradation and compatibility limitations. In addition to the same voltage range and package footprint discrepancies noted for the 71V416L10BE, its most critical difference is a 12ns access time, which is slower than the original part's 10ns. Under the same system timing constraints, this part cannot meet the original read/write speed requirements, potentially leading to system performance degradation or timing violations. It is not recommended as a direct substitute unless the system has sufficient timing margin to accommodate the additional 2ns of latency, and also meets the conditions regarding voltage compatibility and PCB redesign.
Analysis ID: 73D5-E6C7000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com