1. LM2902YDT Substitution Conclusion The LM2902YDT can serve as a replacement for the NJM2902M in most general-purpose applications; however, several key differences must be considered. Its gain bandwidth product (1.3 MHz) is higher than that of the original part (500 kHz), offering improved high-frequency performance. The slew rate (0.4 V/µs) is slightly lower than the original’s 0.5 V/µs, which may impose a minor limitation in high‑speed signal response. The output stage is push‑pull, whereas the original datasheet does not specify the output structure—typically a push‑pull output provides stronger drive capability, but the original circuit should be checked to ensure it does not rely on a specific output configuration. The output current rating (60 mA) is higher than the original’s 40 mA, enabling heavier load driving. The supply current per channel is 1.5 mA (approx. 6 mA total), compared to the original’s 1 mA (likely total), resulting in increased quiescent power dissipation. The supply voltage range (3 V to 30 V) has a maximum limit 2 V lower than the original’s 3 V to 32 V; therefore, the substitute is not compatible if the application voltage exceeds 30 V. The package is a narrower 14‑SOIC (3.90 mm width) versus the original’s 5.00 mm width, requiring PCB layout adjustments for mechanical compatibility. Additionally, the LM2902YDT carries automotive‑grade AEC‑Q100 qualification, making it suitable for high‑reliability environments. In summary, substitution is feasible provided the voltage requirement, package fit, and power consumption are verified and acceptable.