1. TL072CDT Substitution Conclusion The TL072CDT serves as a direct form-fit-function replacement, maintaining full compatibility in core architecture (JFET-input, dual op-amp) and package. However, its key performance parameters are comprehensively inferior to the original part, relegating its use to non-demanding general-purpose applications. The primary performance deltas are as follows: Its slew rate (16 V/µs vs. 45 V/µs) and gain-bandwidth product (4 MHz vs. 10 MHz) are significantly lower, substantially degrading its ability to process high-speed or high-frequency small-signals. This can lead to waveform distortion under large-signal conditions or insufficient usable bandwidth. Its input offset voltage (3 mV vs. 300 µV) is an order of magnitude higher, introducing greater DC error and making it unsuitable for applications requiring high DC precision. Furthermore, its higher minimum supply voltage (6 V vs. 4.5 V) restricts its use in low-voltage systems. Its core advantage is possession of AEC-Q100 automotive-grade qualification. If the application demands stringent automotive or industrial reliability and temperature range requirements while being insensitive to the performance shortcomings noted above, the TL072CDT can be considered as a cost-reduction or supply-chain alternative.