1. BA4560FVM-GTR Substitution Conclusion The BA4560FVM-GTR cannot serve as a direct substitute, primarily due to two critical technical differences that lead to insufficient compatibility. First, the BA4560FVM-GTR has a minimum operating voltage of 8V, whereas the LM358AST can operate down to 3V. This prevents proper startup in single-supply 3.3V or 5V systems. Second, its quiescent current is as high as 4mA (compared to only 1.4mA for the LM358AST), resulting in approximately six times higher power consumption, which would significantly impact battery‑powered or low‑power designs. Additionally, although the BA4560FVM-GTR offers superior performance in bandwidth (10MHz vs. 1.1MHz), slew rate (4V/µs vs. 0.6V/µs), and lower input offset voltage (500µV vs. 1mV), these advantages are only valuable in high‑voltage, non‑power‑sensitive, high‑speed applications. Minor differences in package dimensions (2.80mm vs. 3.00mm width) may also affect PCB layout compatibility. If the original design relies on the LM358AST’s wide voltage range, ultra‑low power consumption, or AEC‑Q100 automotive qualification (which the BA4560 does not specify), substitution is not feasible. Replacement should only be reconsidered when the application scenario meets the following conditions: higher supply voltage, low sensitivity to power consumption, and a requirement for higher signal bandwidth.