1. TL072CDT Substitution Conclusion The TL072CDT can serve as a direct pin-compatible substitute; however, its key performance parameters are significantly inferior to the original part, making it a downgrade suitable only for non-critical applications with relaxed performance requirements. The differences include: its slew rate (16 V/µs) and gain-bandwidth product (4 MHz) are less than half those of the original part (40 V/µs, 10 MHz). This will substantially degrade the circuit's ability to handle high-frequency signals or fast transients, potentially leading to waveform distortion or increased settling time. Its input offset voltage (3 mV) is over four times higher than the original (700 µV), introducing greater DC error into the system and affecting the accuracy of high-gain amplification or DC-coupled circuits. Its sole advantages are a lower quiescent current (1.4 mA vs. 6.2 mA total supply current) and compliance with the AEC-Q100 automotive standard, making it suitable for cost-sensitive, low-performance applications where power consumption is critical or automotive-grade qualification is required.