Explore our elite engineering products designed for low thermal expansion, rugged hermeticity, and strict aerospace compliance.
In optoelectronics, modern high-power Laser Diodes (LD) represent some of the most thermally sensitive devices in production. As operational wavelengths narrow and output densities surge, the interface between optical fibers, active semiconductor chips, and environmental barriers demands a level of physical integration that matches atomic levels.
This is where Kovar Alloy (ASTM F15) becomes an essential component. Composed of 29% Nickel, 17% Cobalt, and a balanced Iron structure, Kovar exhibits a thermal expansion characteristic that closely mirrors borosilicate glasses (such as Corning 7052) and ceramic substrates across a temperature spectrum of -80°C to 450°C. This precise coefficient of thermal expansion (CTE) matching prevents stress-induced fractures, maintaining structural integrity through repeated thermal cycles.
Unlike copper or aluminum, which display excellent thermal conductivity but expand rapidly under heat, Kovar protects sensitive glass windows and optical fiber feedthroughs from tensile stress. If the metal expands faster than the glass seal, the hermetic window collapses, letting moisture in and causing immediate device failure.
Xinyunyang Precision Technology Co., Ltd. (Founded November 2014)
From the beginning, the company has adhered to its initial intention of industry, sticking to the business principles of Integrity, Innovation, Cooperation, and Sharing. We focus on Kovar precision processing technology as our core competitiveness, deeply cultivating the fields of semiconductors, optical communications, aerospace, medical devices, and new energy/military industry. We are dedicated to providing miniaturized, customized, and high-reliability metal packaging solutions to global customers.
Our goal is to become a significant hermetic package lids, Kovar alloy components, and precision parts supplier in China—and eventually worldwide—through continuous effort alongside our valued partners and customers.
High-precision processing capability
Advanced technology and equipment
Strict quality control standards
Flexible customized services and solutions
Pioneering precision metal packaging solutions for extreme demanding environments
The company maintains a professional team of over 100 people, with technical and engineering experts making up 30% of our workforce.
Our core members have been deeply engaged in precision metal processing for over a decade. We continue to pioneer composite processing technologies for special alloys like Kovar and titanium, proactively designing solutions for cutting-edge packaging needs in 5G, artificial intelligence, and new energy.
With our ISO 9001 certified quality management system and intelligent production scheduling, Xinyunyang has boosted regular order delivery efficiency by 15%-20%. We are a vital global supplier combining technical depth with broad service capability.
Take a virtual tour through our state-of-the-art facilities, laboratory, and production workshops
Supplying high-performance hermetic packaging across core industrial sectors
Modern optical networks rely heavily on high-speed transmitters. Our Kovar D-Sub connectors and multi-pin feedthrough headers protect critical laser emitters from moisture, maintaining signal alignment over a 25-year service life.
Deep-space electronics face extreme cosmic radiation and massive thermal shifts. Our Kovar housings provide robust, hermetic shields that safeguard delicate control circuitry from vacuum pressures and thermal extremes.
LiDAR modules require durable packaging that handles continuous road vibrations and wide temperature swings (-40°C to 125°C). Xinyunyang delivers low-cost, high-reliability Kovar bases and frames that keep optical components securely in place.
Staying ahead of modern optoelectronic development trends
As global data traffic increases, traditional pluggable transceivers are approaching their physical limits. The industry is moving toward Co-Packaged Optics (CPO), where optical engines are mounted directly alongside silicon switch ASICs on a single substrate.
This shift calls for Kovar substrates and micro-machined frames with sub-micron dimensional tolerances. At Xinyunyang, we are actively developing advanced chemical etching and dry ultra-precision machining techniques. These processes allow us to produce custom micro-machined Kovar components that easily meet the tight alignment requirements of multi-fiber arrays.
Future laser packaging must withstand harsher, highly corrosive environments without using hazardous substances. Our R&D is focused on nickel-free barrier layers and high-durability gold plating to completely eliminate hydrogen embrittlement.
By utilizing advanced physical vapor deposition (PVD) combined with precision electro-deposition, our Kovar structures achieve salt-spray resistance exceeding 96 hours while maintaining outstanding gold-wire bonding characteristics.
Bringing together advanced automation, quick-turn prototyping, and robust global logistics
Our manufacturing facility in Dongguan represents the modern standard of China Industry 4.0. By combining a comprehensive ERP planning system with automated CNC machining lines, we eliminate manual scheduling errors, allowing us to pivot production quickly and efficiently.
Whether you need rapid prototypes or high-volume production runs, our facility handles the entire manufacturing workflow in-house. We manage every step—from raw material testing and precision CNC milling to surface plating, quality control, and final hermetic checking.
Meeting global quality, environmental, and trade compliance standards
Our quality management processes are fully certified, with complete traceability on materials, dimensional inspection logs, and leak test results for every production batch.
All materials and surface treatments used in our production strictly comply with European Union RoHS directives and REACH regulations, avoiding the use of restricted or hazardous chemicals.
With direct logistics routes to major global technology hubs in Europe, North America, and across Asia, we ensure fast transit times and trouble-free import clearance.
Delivering consistent, high-yield solutions for multinational procurement operations
Managing procurement cycles for components like Kovar bases, precision frames, and optical headers requires absolute consistency across production batches. A dimensional variance of just a few microns can compromise optical alignment, leading to lower yields during automated die-bonding and wire-bonding steps.
Xinyunyang reduces procurement risk through comprehensive control systems:
Clear technical insights on Kovar alloy machining, plating, and thermal performance
Although copper has excellent thermal conductivity, its high coefficient of thermal expansion (about 16.5 x 10^-6/K) causes significant stress on glass feedthroughs and lenses during thermal cycles. Kovar's CTE closely matches borosilicate glass (approx. 5.1 x 10^-6/K), preventing stress-induced glass cracks and preserving hermeticity.
By optimizing tool geometry, using custom diamond-like carbon (DLC) coated tooling, and matching specific spindle speeds and feed rates on high-speed CNC centers, we achieve excellent surface finishes (Ra < 0.3μm) without using oils. This dry-machining approach avoids oil contamination, simplifying subsequent plating and welding steps.
We typically apply electroplated nickel (conforming to AMS-QQ-N-290) as a diffusion barrier, followed by high-purity gold plating (conforming to ASTM B488). This plating combination delivers excellent corrosion resistance and supports high-yield gold-wire bonding and eutectic solder assembly.
We perform helium mass spectrometer leak detection testing under vacuum conditions according to MIL-STD-883 standards. This rigorous testing ensures our hermetic seals consistently achieve leak rates below 1x10^-9 mbar·l/s, providing robust protection for sensitive inner electronics.
Yes. Our specialized rapid prototyping service can translate customer CAD models into high-precision, physical Kovar prototypes in just 3 to 5 business days, helping speed up your design validation phase.
Explore more of our high-quality CNC machined parts and custom metal housings
Xinyunyang Precision
