1. BA2902SFV-E2 Substitution Conclusion Conditional substitution is feasible but requires careful evaluation. This part matches the original in basic architecture (quad general-purpose op-amp), supply voltage range (3–32V), and package (SSOP, typically compatible with TSSOP). However, its key dynamic performance—gain bandwidth product (500kHz) and slew rate (0.2V/µs)—is notably lower than the original (1.2MHz, 0.5V/µs). In circuits handling higher frequency signals or requiring fast transient response, this may lead to insufficient bandwidth, signal distortion, or longer settling time. Additionally, its lower quiescent current (700µA), while beneficial for low power consumption, may reflect different internal biasing design, requiring trade-offs in applications prioritizing power efficiency versus AC performance. It is only suitable for DC or low-frequency applications where bandwidth and slew rate are not critical. Functional and performance verification in the actual circuit is mandatory before substitution.