1. LM258DRG4 Substitution Conclusion The LM258DRG4 is not a viable substitute, primarily due to its significantly inferior key dynamic performance compared to the original part. Its slew rate (0.3V/µs) and gain-bandwidth product (700kHz) are approximately 1/43 and 1/6 that of the MC33072ADR2G, respectively. In applications requiring the processing of rapidly changing signals or higher frequencies, the LM258 will introduce severe signal distortion or insufficient bandwidth. Furthermore, its input offset voltage (3mV) is six times higher, which will directly lead to a significant degradation in DC accuracy. Although the LM258 offers lower power consumption and slightly higher output current, these advantages cannot compensate for its substantial shortcomings in speed and precision. Therefore, it is only suitable for applications with extremely low requirements for dynamic performance and accuracy and cannot serve as a direct replacement.