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DAWN Tech: Regional Parylene Expertise for High-Reliability Manufacturing
DAWN Tech
DAWN Tech: Regional Parylene Expertise for High-Reliability Manufacturing
Koon Lee Shen, Founder and CTO
A precision component often demands protection that appears straightforward from the outside. It must resist moisture, chemicals, corrosion and electrical stress without adding meaningful bulk, altering dimensions or leaving any surface inadequately covered. The challenge intensifies as components grow smaller and more intricate—narrower gaps, sharper edges, denser circuitry and complex geometries that reduce the margin for coating inconsistency. A protective layer may appear complete while thinning at an edge, pooling between components or failing to enter the spaces most exposed to damage.

That is the problem Koon Lee Shen built DAWN Tech to solve.

When he founded the company in Malaysia in 1994, Parylene conformal coating was already established in Europe and North America as a high-reliability form of surface protection for electronics, aerospace, medical devices and automotive systems.

Asia-Pacific manufacturers could access the technology, but only from a distance. Components had to travel overseas, creating a logistical problem when they sit far from the manufacturer. Development cycles lengthen. Communication slows. Design changes take longer to act on. Prototype evaluations require more coordination than they should.

“Our goal was not simply to offer a coating service,” Shen says, “but to provide local manufacturers with timely access to a proven, high-reliability solution that could meet stringent international quality and performance standards.”

Since founding DAWN Tech, Shen has guided the development of a regional Parylene coating capability that now spans five countries. Operations established in Malaysia and Singapore extended into the Philippines, Thailand and China. That means clients have access to local sales and technical support teams who understand the operating conditions, industry requirements and production realities surrounding each application, while drawing on the collective engineering resources of the wider DAWN group.

The proximity enables coating requirements to be integrated with the manufacturing process, shortening development cycles and enabling tailored coating decisions suited to each intricate application. No overseas handoff, no fragment engineering dialogue.

As components become smaller and durability expectations rise, the tolerance for coating variation narrows. DAWN Tech helps manufacturers meet these tighter demands while continuing to advance mission-critical products with confidence.

Its regional footprint, therefore, represents more than geographic reach. It embedded a critical engineering capability that the Asia Pacific’s expanding manufacturing ecosystem required.

Reaching What Liquid Coatings Struggle to Covers

Traditional conformal coatings such as acrylics, silicones, urethanes and epoxies are applied as liquids by spraying, dipping or brushing. Because their movement is governed by surface tension and gravity, pooling can occur in recessed areas, and thinning may develop around the edges. Narrow gaps, sharp features and intricate three-dimensional structures present particular difficulty. Coverage that appears adequate at the surface may be inconsistent in the areas most exposed to moisture, chemicals, corrosion and electrical stress.

Parylene follows a different path.

DAWN Tech applies it through Chemical Vapor Deposition in a sealed vacuum system. A solid dimer is vaporized, then pyrolyzed into a reactive monomer gas. That gas enters a room-temperature chamber and polymerizes directly onto exposed surfaces, forming an ultra-thin, transparent film. Because the coating arrives as a gas, it can travel around edges, enter narrow crevices and cover irregular three-dimensional structures with a level of uniformity that liquid application cannot consistently achieve across complex geometries.

No solvents enter the process. No post-deposition curing follows. Coating thickness is adjustable within the micron range, giving the team precise control over the protection each application requires.
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State of Industry

Enhancing Electronics Longevity with Parylene Coating Solutions

In the Asia Pacific (APAC) region, rapid advancements in industrialization are continuously changing the face of the manufacturing industry, electronics industry, healthcare industry, and precision engineering industry. In such an ever-changing environment, there is an ever-increasing need to protect the surfaces in order to increase the reliability and operational life. Parylene coating technology plays an indispensable role in this aspect since it provides very thin, highly uniform, and extremely conformable protective coatings.

Parylene coatings are known for their superior ability to protect delicate parts from moisture, chemicals, and stresses in the environment. With the ever-increasing production capacity and use of new technologies in the APAC industries, the demand for superior coatings is also rising, which makes parylene coating application a part of this phenomenon.

Expanding Industrial Applications across APAC

The widespread use of parylene coating solutions in APAC is greatly due to the fast expansion of electronics manufacturing and medical device fabrication. As far as electronics are concerned, the coating can be used in order to ensure protection of printed circuit boards, sensors, and other microelectronic components that need to have reliable insulation properties as well as environmental resistance.

Parylene coatings allow forming an even layer around objects despite their shape, which is why this material can be successfully used for creating miniaturized devices that become more and more popular in consumer electronics and industries.

When it comes to the field of healthcare, parylene coatings are used to coat implantable devices, diagnostic tools, and surgical instruments that require a biocompatible and chemically resistant surface. Due to the inert nature of the coating, it does not react with other materials, which is very important from the point of view of healthcare regulations. With the further development of healthcare infrastructure in APAC countries, there will be more requests for such coatings.

The automotive and aerospace sector also plays a major role in the integration of parylene coating technology. The electronic controllers, sensors, and navigation devices incorporated in the industry have to function in harsh environments, which include exposure to temperature variations and moisture. Parylene coating technology provides an effective barrier that ensures that the components function without fail. This makes it an ideal option for those companies that aim at enhancing the reliability of their products without compromising on their size or performance. In the above-mentioned industries, the flexibility offered by parylene technology is helpful in meeting diverse engineering needs.

Performance Advantages and Technical Benefits

One of the primary strengths of the parylene coating solution is the use of the vapor deposition method for applying the coating that guarantees even coverage. Unlike other coatings that are liquid, parylene can penetrate small areas that would not have been covered by any other method. This particular strength is very useful in modern times when manufacturing processes are increasingly getting complicated.

The protection offered against moisture, chemicals and electrical interference ensures that the device operates in a stable manner. Protection from such elements is particularly useful where there are varying levels of moisture and where there is the presence of corrosive materials. The coating material also has very good dielectric properties and thus offers insulation for electric components.

“Parylene coating technology provides an effective barrier that ensures that the components function without fail.”

The other important advantage is the coating’s stability in the long run. Parylene retains its protective qualities in the long run without deterioration, and as a result, there is no need for constant maintenance. This is especially important for industries where it is crucial that machinery be reliable, such as telecommunication, transportation, and automation. This combination of factors makes parylene highly valuable for manufacturing companies that want to improve the quality of their products and minimize risks in the APAC region.

Market Expansion and Regional Manufacturing Growth

The development of parylene coating services within the APAC region is highly correlated with the rising industrial capacity and concentration on advanced materials. Many countries within APAC are increasingly involved in electronics manufacturing, medicine development and automation, which all require high-quality protective coatings for products. The industrial growth has resulted in growing demand for solutions that can make their products more reliable while at the same time allowing efficient production at large scale.

The development of supply chains within the APAC region is another important factor, which is responsible for the greater availability of parylene coating services. With better integration of manufacturing hubs, companies are able to access new coating technologies more easily and efficiently, thus decreasing their production period and increasing their cost efficiency.

The progress is being further enhanced through technological innovations. In particular, ongoing studies are aimed at increasing coating efficiency and speeding up its application, while also ensuring better performance of materials in use. The innovations are expected to contribute to the expansion of the applicability of the coatings in the development of wearable devices, smart sensors, and advanced medical implants.

It is possible to conclude that parylene coating solutions serve as an essential component of industrial growth and advancement in the APAC region. Their contribution to the provision of efficient protection and enhanced performance of the devices under production makes them an integral part of contemporary production systems. With the increasing demand for high-quality materials, parylene technology will remain an important contributor to innovation and quality in the region.

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Leadership Perspective
Selective Conformal Coating in Electronics Manufacturing
PVA
Selective Conformal Coating in Electronics Manufacturing
Jon Urquhart, Director - Global Applications Engineering

Look around. It’s no secret that electronics have become an integral part of the human experience. From smartphones and automobiles to medical devices and exercise equipment, each device serves a vastly different purpose in our lives. Still, they share one similarity—they are all equipped with some electronic circuitry. These circuits are usually designed on a rigid or flexible printed circuit board (PCB)and integrated into various electronic devices. However, because of how electronic devices are used, they are especially susceptible to failure if exposed to contaminants such as dust particles, moisture, humidity, corrosive substances, and other foreign materials. Manufacturers and consumers both want the same thing: they want their products to last. In order to extend a product’s lifecycle, it is essential that its PCB must be well protected from exposure. Enter the conformal coating.

Conformal coating is one of the most commonly used methods for protecting electronic devices. The practice involves applying a liquid coating over a PCB, which then solidifies to become a thin protective barrier. Modern conformal coating equipment is designed to apply coatings onto the surface of an electronic assembly in a selective manner. Due to the electrically insulating properties of conformal coatings, the equipment is programmed to only coat desired areas of a PCB by accurately controlling the placement of the liquid to ensure proper coverage of components and solder joints while avoiding any connectors or contact points. Alternate applications can be run using a dip or bulk spray process where the entire PCB assembly is coated, but this requires the use of masking in order to keep coating off contact points. Masking involves using tapes, liquids, or specially designed fixtures to shield the PCB from the liquid as it is being applied. This process requires an operator to apply and or remove the masking materials.

An automated selective coating system is the ideal choice for medium-to-high volume production of PCBs where accuracy, repeatability, and minimal operator handling is required. The system’s selective application ability will greatly reduce or eliminate the need to use masking materials to achieve the desired results. Eliminating the necessity for masking reduces the cost of labor and materials used in the manufacturing process. Additionally, since the coating is only applied where needed on the PCB, there is very little waste of the coating chemical lost to overspray beyond the PCB or target areas. These efficiencies in material and labor usage all amount to an increased return on investment (ROI).

Each coating material has its strengths and weaknesses and should be evaluated prior to designing into a product specification

Once the liquid has been applied to the PCB, the coating is cured to create a solid, protective layer. Curing can be accomplished by various methods such as heating, exposure to moisture, high-intensity ultraviolet light, solvent evaporation, or chemical reaction. There are numerous types of coatings available, including acrylic, silicone, epoxy, and urethane. Each coating material has its strengths and weaknesses and should be evaluated prior to designing into a product specification.

Selective conformal coating equipment has evolved from simple XYZ robots using a single spray valve into multi-axis, multi-head systems with many integrated features. The use of vision systems, flow monitoring, spray pattern measurement, viscosity control, and fluid metering are often integrated into automated systems to ensure coating results remain stable and consistent. Electronics manufacturers have the choice of running the process either offline in a standalone configuration or integrated with their existing electronics production line. Coating machines can also be connected to factory information systems to track useful production metrics such as machine uptime, errors, coating usage, or any other data point relevant to the process used at the factory site.

Providers also offer tools used beyond the conformal coating process. Alongside the conformal coating system, equipment such as curing ovens, cleaning, and inspection systems can be delivered as a comprehensive package with all the means required to provide a repeatable and stable manufacturing process.

When evaluating a conformal coating process for electronic assembly, several factors should be considered early in the design to avoid future issues. For example, a PCB that is used in an automotive environment will need to withstand broader temperature changes than a PCB used in a child’s toy. There is an abundance of material choices and processing methods, and there is no one-size-fits-all solution that is suitable for all end-use environments. Designers and Production Managers should perform due diligence to fully understand the equipment, application, and material guidelines prior to implementing a conformal coating process.

No matter the product or device, if there are electronics involved, it is paramount to ensure they are protected from the environment. Conformal coating is currently the most widely adopted solution. A properly deployed selective conformal coating process has been proven to lower manufacturing costs and reduce variation between coated assemblies while offering high-level traceability and flexibility, ultimately saving the manufacturer time and money.

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