2. SIT8208AI-G2-33E-62.500000X Substitution Conclusion Direct substitution is not feasible. The difference again centers on operating voltage: the original part is 2.8V, while this model is 3.3V. This is a fundamental distinction that directly dictates compatibility with the target system's power rail. Installing this part in a circuit designed for 2.8V supply may result in insufficient drive capability or failure to oscillate properly due to undervoltage. If the circuit actually provides a 3.3V supply, the original 2.8V-rated part would be at risk of overvoltage stress. Both models share the "X" suffix, which may indicate an identical temperature range or other lot characteristics. However, the difference in voltage specification renders them electrically non-interchangeable, despite having identical output type, frequency, package, and functional control.