1. AX3DBF1-125.0000T Substitution Conclusion This device is a viable substitute, but key electrical parameter differences must be noted. In terms of core function, frequency, voltage, output type, package, and frequency stability, it is fully compatible with the original part and is a direct drop‑in replacement. The primary differences are: 1) Operating current (27 mA vs. 23 mA) is 4 mA higher, which imposes a slightly heavier load on the system supply—ensure sufficient margin on the power rail; 2) Disable‑state current (10 µA vs. 18 mA) is three orders of magnitude lower. This is a significant advantage: in low‑power or shutdown modes, the device contributes almost negligible current to the system standby budget, making it well‑suited for battery‑powered or static‑power‑sensitive applications.