2. NJM2902M Substitution Conclusion Direct substitution is generally feasible, but details require attention. Its key dynamic parameter, slew rate (0.5 V/µs), matches the original part, ensuring similar signal transient response capability. The gain bandwidth product (500 kHz) is approximately half that of the original (1.2 MHz); the usable bandwidth in high-gain configurations will be reduced, necessitating evaluation against the circuit's high-frequency requirements. Its advantages include higher output drive current (40 mA vs. 30 mA) and a wider maximum supply voltage (32V vs. 26V), offering better robustness. The primary differences stem from minor variations in non-critical parameters (e.g., input offset voltage, quiescent current) due to the different manufacturer, and the potential mechanical compatibility issue from a wider package body width (5.00 mm vs. 3.90 mm) in high-density PCB layouts. With verification of these points, it can serve as a substitute in most general-purpose amplifier circuits.