SC-cut crystals deliver superior frequency stability for OCXOs and high-precision systems, but their higher Equivalent Series Resistance (ESR) can impact phase noise through thermal noise, loop gain demands, and self-heating. Despite this challenge, SC-cut outperforms AT-cut due to its higher Q fact... read more

This article compares SC-cut and AT-cut crystal aging performance for OCXOs. SC-cut crystals deliver a superior aging rate of ~0.1 ppm/year—ten times better than AT-cut at ~1 ppm/year. Over five years, SC-cut drifts only ~0.5 ppm versus ~5 ppm for AT-cut. Thanks to stress compensation, SC-cut minimi... read more

When frequency stability can’t be compromised, OCXOs outperform TCXOs across satellite communications, military systems, test equipment, and scientific research. While TCXOs serve portable, low-power devices, OCXOs deliver ultra-low phase noise, ±0.005 ppm stability, and resilience against extreme t... read more