Product features

・Supports fundamental-mode, high-frequency operation (156 to 625 MHz)
・Achieves narrow frequency stability (Max. ±20 × 10⁻⁶) required for long‑distance data transmission
・Provides ultra‑low phase jitter¹(Typ. 18 fs) at 625 MHz, 3.3 V
・Features a compact package design (2.0 × 1.6 × 0.66 mm, 2.5 × 2.0 × 0.74 mm)
・Supports high‑temperature operation up to +105°C

Applications・Markets

・Data centers (including AI servers)
・Optical transceivers
・Clock sources for DSPs

Sample・Mass Production Schedule

・625 MHz model: Scheduled to begin in March 2026

　（312.5 MHz model: In mass production）

In recent years, data servers including those used in data centers have continued to increase in speed and capacity. In particular, the rapid rise of applications centered on generative AI and machine learning has led to a sharp increase in communication traffic, driving strong demand for high‑speed, high‑capacity data transmission. As a result, the optical transceivers used within data centers are shifting from 800 Gbps to 1.6 Tbps high‑speed standards, and the demand for crystal devices as reference clock sources that support such high‑speed transmission is expected to grow further.

At the same time, as optical transceivers become smaller and faster, the number of internal components continues to increase while PCB sizes shrink. This trend requires surface‑mount components to be both smaller and higher in performance. Furthermore, as transceivers handle higher‑speed and higher‑capacity data, internal temperatures rise, creating strong demand for highly reliable components that operate stably even in high‑temperature environments. To ensure the quality of high‑speed data communication, reference clock sources that support high frequencies and low phase jitter² are essential. In particular, long‑distance transmission exceeding 40 km requires a strict frequency stability of ±20 × 10⁻⁶ or better.

To address these challenges, we have developed differential‑output crystal oscillators in compact 2.0 × 1.6 mm and 2.5 × 2.0 mm packages that support operation up to +105°C while achieving world‑class¹ performance in high frequency, precision, and low phase jitter. These products were specifically developed for the fundamental‑mode, high‑frequency range (156 to 625 MHz) used in next‑generation optical transceivers for data centers (800 Gbps / 1.6 Tbps). Samples for the 625 MHz model will be available starting in March 2026.

These oscillators are also suitable for automotive applications. As in‑vehicle networks continue to increase in speed, the need for high‑frequency, high‑precision clock sources with excellent noise immunity is growing, and our products can be widely utilized across the automotive field.

We will continue to expand our lineup of smaller, higher‑frequency, and lower‑noise products, contributing to a safe, secure, and comfortable society through our crystal device business.

Note 1 : As of December 2025, according to our research.
Note 2 : Timing variations or fluctuations in a digital signal waveform during transmission.