Jingsai Technology disclosed on May 14, 2026 that it has achieved mass production capability for 156.25MHz and 312.5MHz ultra-high-frequency differential crystal oscillators. This device provides critical clock sensing and signal integrity support for high-speed optical transceiver modules (such as 400G/800G), and its stable supply capability has practical significance for optical communication equipment manufacturers—especially enterprises from Europe and the United States, India, Vietnam, and other regions—in reducing BOM costs and mitigating delivery lead-time risks. Stakeholders in the optical module supply chain, clock device procurement, and high-speed interconnect system integration should closely monitor the impact of this domestic substitution progress on upstream component selection and localized inventory planning strategies.

Event Overview

Jingsai Technology publicly disclosed on May 14, 2026 that it has established mass production capability for 156.25MHz and 312.5MHz ultra-high-frequency differential crystal oscillators. This product is specifically designed for high-speed optical transceiver modules and serves as a core clock sensing component that ensures clock accuracy and signal integrity for 400G/800G optical modules. The current information comes from the company’s official disclosure and does not mention specific production capacity scale, customer qualification status, or certification details.

Which market segments will be affected

Optical module manufacturers: These companies rely on highly stable, low-jitter differential clock sources to meet high-speed Ethernet standards such as IEEE 802.3bs/cs. 156.25MHz (corresponding to the 25G SerDes reference) and 312.5MHz (corresponding to the 50G/100G PAM4 link reference) are key frequency points for DSP/FPGA clock synchronization in optical modules. The entry of domestic devices into the mass production stage means that when replacing imported solutions, sample validation cycles can be shortened and the risk of technical dependence on a single overseas supplier can be reduced.

Optical communication equipment OEMs: For equipment vendors serving markets such as Europe and the United States, India, and Vietnam, the need for localized and verifiable stability of clock device supply is increasing amid geopolitical supply chain fluctuations. The confirmation of Jingsai Technology’s mass production capability provides a new option for optimizing BOM-level cost structures and shortening delivery cycles, especially for large-scale deployment scenarios involving mid-speed optical module platforms.

Clock device distributors and solution service providers: This type of product is a highly reliable, highly consistent active crystal oscillator (XO) and requires supporting EMI suppression, power filtering, and PCB layout support. Distribution channels need to reassess the completeness of technical adaptation documentation, FAE responsiveness, and rapid small-batch sampling service processes in order to meet downstream optical module manufacturers’ stringent testing requirements for timing parameters (such as phase jitter, rise/fall time, and common-mode rejection ratio).

What key points should relevant companies or practitioners focus on, and how should they respond at present

Monitor follow-up customer onboarding and certification progress

At present, only mass production capability has been confirmed. It has not yet been disclosed whether mainstream optical module manufacturers’ reliability certifications such as AEC-Q200 or GR-1244-CORE have been completed, nor whether the product has entered sample delivery or small-batch trial production stages with leading customers. It is recommended that optical module procurement and quality departments continue to track customer cooperation updates and certification announcements published on Jingsai Technology’s official website or industry platforms.

Evaluate the replaceability of 156.25MHz/312.5MHz clock sources in existing designs

For 400G/800G module projects that have been finalized but not yet entered large-scale mass production, hardware engineers are advised to conduct a compatibility pre-evaluation against the electrical parameters disclosed by Jingsai Technology (such as output format LVDS/LVPECL/HCSL, typical jitter values, temperature stability ±0.5ppm), package dimensions (such as 3.2×2.5mm 6-pin), and driving capability, in order to determine whether terminal matching resistors or power decoupling design need to be adjusted.

Review the procurement share and replacement window for similar devices in the current supply chain

If a certain international brand’s XO at the same frequency point is currently the primary choice, it is recommended that procurement and planning departments calculate this material’s share of procurement value in the optical module BOM over the past 12 months, minimum order quantity (MOQ), standard lead time, and the longest historical shortage period, and use this to assess the economic threshold and buffer time window for switching to a domestic solution.

Prepare technical collaboration interfaces and test case reuse in advance

It is recommended to establish early-stage technical coordination with Jingsai Technology to obtain SPICE models, S-parameter files, and typical application schematics; at the same time, reuse the existing module clock jitter test platform (such as Keysight DSA91304A+DCA-X) to verify its measured performance under real eye diagram opening and BER<1e-12 conditions, so as to avoid repeatedly building a test environment during the mass production introduction stage.

Editor’s View / Industry Observation

Observably, this announcement reflects a capability milestone rather than an immediate market shift. The confirmed mass production readiness of two critical frequencies signals progress in domestic high-frequency timing device manufacturing, but actual substitution in high-reliability optical modules remains subject to long qualification cycles and system-level validation. Analysis shows that the impact is currently most tangible for mid-tier optical transceiver vendors targeting cost-sensitive export markets — not for hyperscale datacenter suppliers where qualification inertia is strongest. From an industry perspective, this development is better understood as a strengthening of optionality in the timing supply chain, rather than evidence of broad-based replacement.

Conclusion

Jingsai Technology’s mass production of 156.25MHz/312.5MHz differential crystal oscillators marks a substantive step forward for domestic high-frequency clock sensing devices in the critical link of optical modules. Its industry significance lies in enhancing supply chain resilience options rather than creating an immediate substitution effect. At present, it is more appropriate to understand this as a phased signal reflecting the improvement of local timing device engineering capability, and its actual market penetration pace will still depend on downstream customers’ certification progress, performance consistency, and the accumulation of long-term reliability data.

Information source notes

Primary source: Jingsai Technology official disclosure information dated May 14, 2026.
Areas requiring continued observation: customer onboarding progress, reliability certification status, mass production ramp-up pace, and overseas export customs declaration data.