As seen in this slide, the AOCJY3 series is also a mid-tier OCXO solution utilizing an SC-cut crystal, exhibiting excellent phase noise and frequency stability of ±5 ppb to ±30 ppb. Finally, the AOCJY4 series is a high-end OCXO solution which uses an SC-cut crystal resulting in excellent phase noise properties and precise frequency stability of ±2 ppb to ±10 ppb.