Unigen Corporation provides in-house conformal coating services as part of its electronics manufacturing services (EMS) capabilities in Silicon Valley. Conformal coating protects printed circuit boards (PCBs) and electronic assemblies from harsh operating environments, improving reliability in industries such as automotive, medical devices, robotics, telecommunications, and industrial automation.
Electronics manufacturers use conformal coating to improve the reliability and operational lifespan of electronic assemblies, particularly in ruggedized environments.
For electronics operating in high humidity, extreme temperatures, or corrosive environments, conformal coating adds a protective barrier that extends the lifespan of sensitive electronic components. By offering conformal coating within its production line, Unigen enables customers to streamline manufacturing while improving the durability of their electronic systems.
What Is Conformal Coating in Electronics Manufacturing?
Conformal coating is a protective polymer film applied to printed circuit boards (PCBs) to protect electronic components from environmental contaminants.
The coating “conforms” to the shape of the circuit board and components, creating a thin protective layer that shields electronics from:
- Moisture and humidity
- Salt spray
- Dust and airborne contaminants
- Chemicals and solvents
- Temperature fluctuations
- Fungus and corrosion
Unigen Corporation’s In-House Conformal Coating Process
Unigen Corporation integrates conformal coating directly into its electronics manufacturing services workflow, allowing customers to benefit from a fully controlled and efficient production process. The conformal coating process at Unigen includes:
Custom Masking and Preparation
Unigen utilizes a Conformal Coating based upon HumiSeal® UV40 which is then UV Cured to save process time and additional heating. The process starts with the company’s in-house 3D printers to create custom masks and caps for the board components that provide exceptional accuracy. A 4-axis 35-degree angled Spray Head is then used to deliver a uniform and complete coating on all surfaces for a truly finished look. This protects electronic circuits from harsh environments, such as high humidity and extreme temperatures.
Unigen’s conformal coating process is electrically insulating, and therefore maintains long-term Surface Insulation Resistance (SIR) levels, providing a barrier to airborne contaminants from the operating environment, such as salt spray, moisture, chemicals and fungus – thus preventing corrosion and extending lifetime of the assembly.
HumiSeal® UV40 Conformal Coating Material
Although Unigen supports many types of HumiSeal applications, the most common material choice is UV40. The single component HumiSeal UV40 conformal coating has an excellent chemical resistance, surface hardness, flexibility and moisture resistance. Additionally, Unigen provides a secondary moisture cure mechanism for curing in the non-UV exposed shadowed areas. To aid coating inspection, the UV40 cure fluoresces under UV light.
Certifications and Compliance
The HumiSeal UV40 conformal coating used by Unigen Corporation meets several industry standards and certifications, including:
- UL Recognition – File Number E105698
- MIL-I-46058C Qualified
- IPC-CC-830 Certification
- RoHS Directive 2015/863/EU Compliance
- China Standard GB30981-2020
- ISO 10993-5
Conformal Coating as Part of Unigen’s Electronics Manufacturing Services
Conformal coating is just one of the many value-added services offered by Unigen in its fully integrated production line. From NPI to full turnkey, Unigen is your trusted manufacturing partner throughout the entire product life cycle.
